Disertación/Tesis

Clique aqui para acessar os arquivos diretamente da Biblioteca Digital de Teses e Dissertações da UFBA

2024
Disertaciones
1
  • AGNES SOPHIA BRAGA ALVES
  • Valorization of HIE OxG hybrid crude palm oil: a diagnostic study of physicochemical characterization and oxidative stability.

  • Líder : CAMILA DUARTE FERREIRA RIBEIRO
  • MIEMBROS DE LA BANCA :
  • BRUNA APARECIDA SOUZA MACHADO
  • CAMILA DUARTE FERREIRA RIBEIRO
  • CLAUDIO VAZ DI MAMBRO RIBEIRO
  • Data: 16-feb-2024


  • Resumen Espectáculo
  • Hybrid crude palm oil (HCPO) interspecific from Elaeis guineensis and Elaeis oleifera (HIE OxG) was developed through genetic improvement techniques. This variety offers increased resistance to diseases and pests and higher bioactive compound levels in the oil. In this context, this study aims to understand HCPO HIE OxG regarding the diagnosis of knowledge, perception, and potential consumption by the Brazilian population, as well as its physicochemical and oxidative aspects. The study consisted of three stages. First, a prospective study on hybrid plant oils was conducted using the Espacenet® and Scopus databases, analyzing 24 patent documents and 187 articles. Agricultural and Biological Sciences were the main application areas for patents (79.2%) and articles (49.3%). The first patent document was registered in 1990, while the first article was in 1969. Most patents were filed via the Patent Cooperation Treaty (45%), followed by the United States (30%) and Canada (20%). The results indicated a growing trend in patenting and publishing articles on hybrid oils, providing insights into potential industrial, technological, and scientific research trends in the food, pharmaceutical, and biofuel sectors. In the second stage, an online survey was conducted using a semi-structured questionnaire with 16 questions applied on Google Forms. This study involved 1,065 participants from Brazil. Most responses (61.10%) did not correctly reflect the definition of this type of oil. Overall, the perception of HCPO was predominantly neutral. The research indicated that most participants (52.58%) expressed interest in trying HCPO, while 39.43% showed a medium to high likelihood of buying products with this oil, suggesting market acceptance potential in Brazil. Finally, the third stage aimed to evaluate the behavior of HCPO Unaué HIE OxG during accelerated storage in an oven (Schaal Oven Test). Tests were conducted on HCPO produced in Bahia on days 0, 3, 6, 9, 12, 15, and 18 at 65 ±5°C. Conventional crude palm oil (CPO) from Elaeis guineensis was used as a control, and these oils' composition and oxidative characteristics were analyzed. Regarding fatty acid composition, a higher oleic acid content (from 55.83 ± 0.01% to 56.23 ± 0.01%) was evidenced in HCPO. Over storage time, there was degradation of carotenoids (from 1117.4 ± 13.65 µg/g to 7.38 ± 0.97 µg/g), affecting the color of HCPO from a reddish-orange hue to a medium-dark yellow. HCPO showed better results than CPO, with a lower acidity index ranging from 0.94 ± 0.05% oleic acid to 1.10 ± 0.48% oleic acid. The generation of primary oxidation products, such as peroxides and conjugated dienes, exceeded acceptable limits after the third day of storage. Meanwhile, secondary oxidation products assessed by the thiobarbituric acid reactive substances (TBARS) test increased by 488% in HCPO, but conjugated trienes remained stable (from 0.79 ± 0.06 to 1.01 ± 0.07). After nine days of storage, the Deterioration of Bleachability Index (DOBI) indicated inferior quality for both OPBH and OPB. However, to ensure the absence of any oxidation product, OPBH and OPB remained stable for up to three days (equivalent to 3 months). Although OPBH HIE OxG has been studied since 1969, interest has grown in the last 11 years. With potential market acceptance, this oil reveals higher carotenoids and oleic acid levels than CPO. Future studies may investigate genetic aspects, physicochemical characteristics, their application in new products, and their health effects.

2
  • ARLEN CARVALHO DE OLIVEIRA ALMEIDA
  • STUDY FROM THE LABELS OF BUTTERS PRODUCED IN BRAZIL: SODIUM CHLORIDE, TOTAL FAT,
    SATURATED FATS AND THE CORRELATION WITH CHRONIC NON-COMMUNICABLE DISEASES

  • Líder : MARION PEREIRA DA COSTA
  • MIEMBROS DE LA BANCA :
  • MARION PEREIRA DA COSTA
  • CARLOS PASQUALIN CAVALHEIRO
  • JOSE GIVANILDO DA SILVA
  • Data: 27-mar-2024


  • Resumen Espectáculo
  • Butter, a fatty dairy product, is appreciated for enhancing various dishes’ flavor and providing essential nutrients. However, concerns regarding its levels of sodium and saturated fat have raised public health issues. This study analyzed 515 butter labels from 504 companies, classified into three categories: common salted butter, first quality, and extra. A significant variation in sodium levels among butter types was observed, with common butter showing the highest content (median of 775 mg/100g), followed by first-quality butter (median of 700 mg/100g), and extra butter (median of 545 mg/100g). In regulatory terms, the percentages of butter samples categorized as high in sodium varied among agencies: 61.18% by the National Health Surveillance Agency (ANVISA), 83.1% by the World Health Organization (WHO), 59.52% by the Food Standards Agency (FSA), and approximately 48% by the Pan American Health Organization (PAHO). The agreement between PAHO and ANVISA was nearly perfect (kappa value of 0.740), while ANVISA and WHO showed moderate agreement (kappa value of 0.493). The correlation between FSA and ANVISA was almost perfect (kappa value of 0.955). Regarding health correlations, hypertension showed no significant correlation (R= -0.236, p > 0.05), while diabetes mellitus, obesity, and Stroke (CVA) exhibited substantial negative correlations (diabetes: R = -0.713, p > 0.05; obesity: R = -0.844, p < 0.01; CVA: R = -0.812, p < 0.01). Validated correlation coefficients emphasized strong inverse correlations for diabetes (Rv = -0.70), obesity (Rv = -0.84), CVA (Rv = -0.79), and endocrine, nutritional, and metabolic diseases (Rv = -0.69). Additionally, inverse correlations between butter consumption and the development of non-communicable chronic diseases were found in the literature. These results underscore the importance of regulatory supervision and monitoring of sodium content in food products, particularly in butter, reinforcing the complexity between nutritional content, diet, and health.

3
  • JOSEANE CARDOSO GOMES DE ALENCAR
  • OBTAINING PECTINS FROM UMBU PEELS (Spondias tuberosa L.): DEVELOPMENT AND OPTIMIZATION OF AN EXTRACTION PROCESS ASSISTED BY HIGH INTENSITY ULTRASOUND

  • Líder : BRUNO NICOLAU PAULINO
  • MIEMBROS DE LA BANCA :
  • BRUNO NICOLAU PAULINO
  • ANA ELIZABETH CAVALCANTE FAI
  • RAQUEL GUIDETTI VENDRUSCOLO
  • Data: 08-abr-2024


  • Resumen Espectáculo
  • Fruit industry byproducts represent a significant source of valuable compounds with potential to be transformed into high-added value products. Among these compounds, pectins stand out as biopolymers of great industrial interest due to their gelling, thickening, and stabilizing properties. This study aimed to investigate the potential of umbu peels (Spondias tuberosa L.) as raw material for pectin extraction using high-intensity ultrasound technology and organic acid. The main focus was to develop an eco-friendly extraction method that would provide high yields and a degree of esterification suitable for different industrial applications. The Central Composite Design (CCD) was used to optimize the pectin extraction process, evaluating three independent variables (2³): ultrasound amplitude (%), solid-to-liquid ratio (SLR), and pH of the extraction solution. Five levels were used for each variable, totaling 20 experiments. The pectin yield and degree of esterification (DE) were the responses analyzed. The optimization of the pectin extraction process from umbu peels using CCD resulted in a high pectin yield close to 22% with a DE of 46%. The optimum extraction conditions were: ultrasound amplitude of 60%, SLR of 1:33, and pH 1.5. The optimized extraction process was validated at a laboratory scale, and the effect of different organic acids (citric, oxalic, nitric, and hydrochloric) on the pectin yield and DE was evaluated. The validation of the extraction process at a laboratory scale confirmed the reproducibility of the results obtained in the optimization step. The use of citric acid resulted in a yield of LMP pectin (low esterification pectin) of around 22%. Oxalic, nitric, and hydrochloric acids led to the production of HMP pectins (high esterification pectins) with yields around 13%. The extracted pectins were characterized regarding instrumental color using a colorimeter; the results were compared to those of a commercial citrus pectin (CCP). The pectins extracted from the umbu peels showed significant color differences compared to the commercial citrus pectin. These differences can be attributed to the influence of the type of raw material and the extraction method on the quality of the final product. This study demonstrates for the first time the feasibility of extracting pectins from umbu peels using ultrasound technology. Umbu peels are a promising source of LMP and HMP pectins. Ultrasound technology has proven to be an efficient green method for obtaining food-grade pectins with high yield and quality. This study contributes to the development of more efficient and sustainable pectin extraction methods. The valorization of umbu peels as a source of pectins represents an opportunity for the food industry and for family farming. The characterization of the extracted pectins provides valuable information for the development of new products and applications.

Tesis
1
  • LARISSA SANTOS ASSUNCAO
  • NANOENCAPSULATION OF UNAUÉ HIE OxG PALM OIL HYBRID WITH VEGETABLE COPRODUCTS: OPTIMIZATION, CHARACTERIZATION, CELLULAR ANTIOXIDANT ACTIVITY ASSESSMENT, AND CYTOTOXICITY.

  • Líder : CAMILA DUARTE FERREIRA RIBEIRO
  • MIEMBROS DE LA BANCA :
  • BRUNA APARECIDA SOUZA MACHADO
  • CAMILA DUARTE FERREIRA RIBEIRO
  • EDERLAN DE SOUZA FERREIRA
  • LETICIA DE ALENCAR PEREIRA RODRIGUES
  • MARCELO ANDRES UMSZA GUEZ
  • Data: 05-ene-2024


  • Resumen Espectáculo
  • The search for innovative alternatives in preserving bioactive compounds, such as those found in azeite de dendê híbrido or hybrid crude palm oil (HCPO) Unaué HIE OxG, stands out due to its rich composition of carotenoids, tocopherols, and tocotrienols. Understanding the biological activity of these phytochemicals at cellular level is crucial, with cellular antioxidant activity (CAA) being a more precise indicator of behavior in biological systems. However, the degradation of these compounds in the presence of oxygen and light challenges stability, driving nanoencapsulation as a solution. This technology not only enhances stability and controls release but also facilitates incorporation into foods. Nevertheless, the biological safety of nanoparticles in epithelial cells and their cytotoxicity remains relatively unexplored. Simultaneously, there is a growing interest in biopolymers and vegetable by-product flours as encapsulants, given their nutritional and bioactive composition. In this context, this proposal aimed to nanoencapsulate HCPO Unaué HIE OxG with vegetable by-products, covering the optimization of formulations, characterization of resulting nanoparticles, and evaluation of cellular antioxidant activity and cytotoxicity. Nanoparticles of HCPO with jackfruit seed flour (N-JSF) and nanoparticles of HCPO with jackfruit axis flour (N-JAF) were optimized using a 22 experimental design. The amount of HCPO and encapsulants were the tested independent variables, and particle size and polydispersity index (PDI) were the experimental responses. The selected formulations (mass ratio 0.8:1; JSF or JAF: HCPO) underwent characterization for zeta potential (ZP), apparent viscosity, pH, color parameters, and total carotenoids. Differentiated human colorectal adenocarcinoma cells (Caco-2) were employed to evaluate CAA at various concentrations (2.5; 50; 100; 150; 200; 250 µg/mL) for N-JSF, N-JAF, and free HCPO. Results were expressed in cellular antioxidant activity units (CAA units). Cytotoxicity was assessed through the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) colorimetric assay at the same concentrations, and relative cell viability (%) was calculated. The nanoparticles exhibited nanoscale diameters (<250 nm), monodisperse distribution, good uniformity, and stability (PDI < 0.25; ZP between +30 mV and -30 mV), high encapsulation efficiency (%) (N-JSF 86.44 ± 0.01 and N-JAF 90.43 ± 1.34), and optimal carotenoid retention (>85%). The average apparent viscosity was 21.89 ± 1.20 cP, and both formulations had a more acidic pH than basic. The nanoparticles showed a higher tendency toward yellow (higher b* values) than red, with an average L* value of 40.52 ± 2.97. CAA of N-JSF and N-JAF surpassed that of free HCPO at all concentrations studied for differentiated human colorectal adenocarcinoma cells (Caco-2), and none of the nanoparticles exhibited toxic effects on the cells. Concentrations of 150, 200, and 250 µg/mL for N-JSF and N-JAF, respectively, increased cell viability, indicating a proliferative effect on intestinal epithelial cells. In conclusion, nanoparticles of HCPO with vegetable by-products as encapsulants demonstrated satisfactory results, serving as a sustainable, clean label, and innovative alternative in oil encapsulation for preserving bioactive compounds and applying HCPO in the food industry. Additionally, the findings emphasize the importance of studying CAA in nanoparticles of oil rich in bioactives across different cell lines. The non-cytotoxic nature of nanoparticles indicates promising results regarding biological safety and the ability to prevent damage to intestinal epithelial cells at the studied concentrations.

2023
Disertaciones
1
  • LUAN DA PALMA SANTOS
  • STUDY THE TECHNICAL FEASIBILITY OF THE USE OF GRAPE MARCESS FLOUR FOR SUPPLEMENTATION OF NOODLES TYPE GOMITI RIGATI
  • Líder : RENATO SOUZA CRUZ
  • MIEMBROS DE LA BANCA :
  • RENATO SOUZA CRUZ
  • IGOR VIANA BRANDI
  • CHRISTIANO VIEIRA PIRES
  • Data: 15-feb-2023


  • Resumen Espectáculo
  • Grapes are the second most produced fruit in the world, and when destined for the wine industry, it generates large volumes of waste, which can be reused and incorporated into bakery products. Thus, this work aimed to obtain dry pasta type gomiti rigati, partially replacing wheat flour (WF) with grape pomace flour (FBU). The samples were evaluated for physicochemical, rheological and quality characteristics. As for the physicochemical characteristics, the FBU has a high content of total fibers (45.22%) and ash (7.94% ± 0.27), in addition to moisture (10.01% ± 0.1), water (0.543 ± 0.03), protein (11.88% ± 0.26), total titratable acidity (5.87% ± 0.17), pH (3.62 ± 0.01), showing 55.29 % of particles smaller than 0.250 mm. Regarding the rheological characteristics, the influence of FBU caused an increase in the water absorption capacity of the dough. In the extensographic analysis of the dough, there was a decrease in resistance to extension and extensibility up to the level of 21.04%. The pasta quality test showed that the concentration of 14.18% provided a shorter cooking time while the concentration of 13.33% resulted in a lower loss of solids. Thus, it can be concluded that the formulation of pasta made partially with FBU up to the level of 14.8% is a viable alternative for application in pasta and that allows us to benefit from the claim "source of fiber"
2
  • Luis Alfonso Beltrán Cotta
  • Effect of yellow mombin juice (Spondias mombin L.) addition on the quality parameters of pork meat

  • Líder : CARLOS PASQUALIN CAVALHEIRO
  • MIEMBROS DE LA BANCA :
  • CARLOS PASQUALIN CAVALHEIRO
  • DEBORAH MUROWANIECKI OTERO
  • LEONARDO FONSECA MACIEL
  • Data: 27-feb-2023


  • Resumen Espectáculo
  • This research aimed to evaluate the use of yellow mombin (Spondias mombin L.) juice as a marinade liquid to improve technological, physicochemical, microbiological, and sensory properties of pork Boston butt during refrigerated storage. Yellow mombin juice was used as a marinade liquid at different concentrations (0% − C0, 50% − C50, 75% − C75, and 100% − C100) in Boston butt samples that were analyzed during refrigerated storage for 21 days. Lower hardness and chewiness values were observed in the marinated samples. The use of 50% (C50) and 75% (C75) yellow mombin juice was helpful to accelerate the lipid oxidation of the Boston butt samples at the end of storage. Additionally, C100 showed higher values in lightness and yellowness, and lower mesophilic, psychrotrophic, Enterobacteriaceae counts at day 21 of storage. However, among the marinated samples, C50 and C75 were the highest valued in appearance, flavor, color, overall acceptability, and purchase intention. Therefore, the use of 100% yellow mombin juice (C100) as a marinade liquid could be a viable alternative for the marination of pork.

3
  • Katherine Gutierrez Alzate
  • Application of industrial byproducts and encapsulated probiotics in dairy products

  • Líder : MARION PEREIRA DA COSTA
  • MIEMBROS DE LA BANCA :
  • BRUNO NICOLAU PAULINO
  • MARION PEREIRA DA COSTA
  • NELSON DE CARVALHO DELFINO
  • Data: 28-feb-2023


  • Resumen Espectáculo
  • Dairy products have been considered one of the main nutritional foods in the human diet. In this scenario, the increase in consumer demand has put pressure on dairy industries to develop new sustainable products that offer health benefits in addition to basic nutritional functions. This has led to the growth of new research, such as the addition of products rich in protein, starch, pectin, and antioxidant compounds, through the use of agro-industrial by-products (seeds and powdered peels), as well as the addition of probiotic micro and nanocapsules. Consequently, a fermented milk beverage was developed with the addition of different concentrations of cupuassu powder (1.5%; 3%) and pulp (5%; 7.5%, and 10%), evaluating the nutritional, physicochemical, microbiological, and sensorial parameters. In addition, a review of the use of micro- and nanoencapsulation of probiotics in products of animal origin, and with emphasis on milk and dairy products, considering the techniques and materials most commonly used in this process. And finally, probiotic microcapsules (Lactobacillus acidophilus) were developed from the use of cupuassu powder. It was found that the addition of cupuassu powder improved nutritional quality, reduced synergy, increased water holding capacity, and improved sensory attributes such as color, consistency, and firmness. The pulp improved the rheological parameters, especially the consistency index and apparent viscosity in the fermented beverage. Therefore, the development of a dairy beverage with functional potential using cupuassu pulp and powder as ingredients is promising in terms of physicochemical, nutritional, and microbial quality. On the other hand, in the encapsulation of probiotics, it was found that nanoencapsulation has significant limitations compared to microencapsulation due to the size of probiotics. It was also found that encapsulation of probiotics improves the physicochemical, sensory, and microbiological parameters, which helped to extend the shelf life of the product due to probiotic viability. In addition, microcapsules of the Lactobacillus acidophilus were produced by employing cupuassu flour in the capsule composition.

4
  • MARIANA FERNANDES ALMEIDA
  • IMPACT OF THERMOVENING PRACTICES AND THE ADDITION OF OAK CHIPS ON THE QUALITY OF RED WINE
     'CABERNET SAUVIGON'
  • Líder : ALINE CAMARÃO TELLES BIASOTO
  • MIEMBROS DE LA BANCA :
  • ALINE CAMARÃO TELLES BIASOTO
  • CAROLINA OLIVEIRA DE SOUZA
  • Ana Paula André Barros
  • Data: 14-abr-2023


  • Resumen Espectáculo
  • Thermovinification and rapid aging with oak chips are alternative oenological practices for the elaboration of red wines. Using this techniques is possible to obtain wines differentiated quality in comparison to the wines winemaking by the traditional method. In this sense, this work goal to evaluate the effect of thermovinification and rapid aging of the wine with oak chips addition on the physical-chemical composition, concentration of phenolic compounds, antioxidant capacity and sensory acceptability. Red wines was elaborated Cabernet Sauvignon grape harvest from the emerging winery micro-region of Garanhuns, Pernambuco State, Brazil. The red wines were elaborated in the enology plant at Embrapa Tropical Semiarid, Petrolina, Pernambuco State Brazil. Four treatments were tested: 1) thermovinification (65ºC for 2h) with wine aging using oak chips (TCC); 2) thermovinification without aging (TSC); 3) traditional winemaking (6 days of  maceration during alcoholic fermentation) and wine aging with oak chips (VTCC); 4) traditional winemaking without aging (VTSC). American (medium toasting) and French (strong toasting) oak chips were used to the wine aging, 3 g L-1 of each, applied during the alcoholic and malolactic fermentations. For the characterization of the physical-chemical profile, analyzes of pH, total and volatile acidity, dry extract, alcohol, color intensity and total polyphenol index were carried out. Twenty-two phenolic compounds were quantified by HPLC-DAD, and the total content of phenolic compounds and monomeric anthocyanins were analyzed by spectrophotometer methods. Antioxidant capacity (AOX) was evaluated by three in vitro assay: DPPH, ABTS and FRAP. Wines acceptability was evaluated by 61 consumers of wine using the hedonic hybrid scale. The practice of thermovinification increased the content of phenolic compounds and the color intensity to the Cabernet Sauvignon red wine. Higher AOX was observed in the treatments which the traditional maceration was replaced by the thermovinification by the three assays applied. Thus, the thermovinification promoted a better nutraceutical quality to the Cabernet Sauvignon red wine and possible can increase the shelf life time of the beverage. In general, the wines were well accepted by the consumers, showing that the Garanhuns region has potential for the production of quality red wines.

5
  • WEENA REBECA PINHEIRO DAMASCENO
  •  

    COMMERCIAL WHITE WINES: PHYSICAL-CHEMICAL, SENSORY AND COLOR CHARACTERISTICS
     
     
     
  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • BRUNO NICOLAU PAULINO
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • LEONARDO FONSECA MACIEL
  • Data: 19-jun-2023


  • Resumen Espectáculo
  •  

    Wine is a drink of great cultural, social, and economic importance, given its historical legacy and its global demand. Red wine is traditionally the most consumed type, however, in Brazil, they have been losing market space to white wines. White wines have typical flavors and aromas, differing in taste from red wines. In addition, the color of white wines is another sensory characteristic that influences the decision to choose the product, however, this is a relationship that is not yet firmly established. Wine is a beverage with complex characteristics that are sensitive to edaphoclimatic conditions, grape varieties, and winemaking techniques, therefore, to ensure the quality and standardization of the product that is imported from several countries, in addition to the general characteristics, the beverage was regulated nationally, being fixed quality parameters. This study sought to better understand the color vs. acceptance vs. physicochemical composition of white wines, through the ACP chemometric tool, crossing data obtained in the CIELab system with the sensorial response of the group of untrained tasters and the physicochemical composition. In addition, the characterization was also used to investigate the compliance of producers with the import standards established by MAPA. 35 samples of imported white wines marketed nationally were evaluated, of which 9 showed non-compliance concerning sugar content (A2, A4, A6, A17, A20, A29, and A30 > 4.0g/L), with correction in the labeling, changing the rating from dry to semi-dry; another non-compliance found was about the content of dry extract (A15 and A23 < 16g/L) and sodium chloride (A9 > 0.9g/L), in this case, by extrapolating the established maximum and minimum limits, these samples must not be marketed. Colorimetric analysis showed L* values (98.89 to 102.07); a* (-0.51 to -3.51); b* (2.45 to 16.85); C* (2.50 to 16.95) and h* (96.12 - 101.94), showing characteristics of young white wines. Sensorially, the color of the samples was well accepted, except for wines A1, A21, and A34, which presented a yellow-brown color, characteristic of oxidized wine, and, according to the tasters' response, the chroma C* was a determining factor for rejection. The total phenolic content was observed to be similar to data in the literature, varying between 181.20 mg/L and 446.94 mg/L, with the relationship with sensory and color attributes not being well clarified.

     
     
     
6
  • Martinho Gamas Dinis Martinho
  • OCCURRENCE OF AFLATOXINS B1, B2, G1 AND G2 IN CORN FLOUR PRODUCED IN NAMPULA, MOZAMBIQUE AND THEIR CARCINOGENIC RISK ASSESSMENT


     


  • Líder : JOSE ANTONIO MENEZES FILHO
  • MIEMBROS DE LA BANCA :
  • IZABELA MIRANDA DE CASTRO
  • JOSE ANTONIO MENEZES FILHO
  • LAISE CEDRAZ PINTO MATOS
  • Data: 29-jun-2023


  • Resumen Espectáculo
  • Introduction: Aflatoxins are compounds produced by the fungi Aspergillus flavus and Aspergillus parasiticus in countries with hot and humid climates. They can contaminate cereals, including maize which is a staple diet in African countries such as Mozambique. These cause serious problems in human and animal health. In sub-Saharan Africa, estimates of dietary exposure to aflatoxins exceed 100 ng/kg bw/day. The incidence of hepatocellular cancer (HCC) is 46.000 cases/year. Mozambique has the highest rate of HCC in the world. Since corn is a food that provides 80% of daily kilocalories for the rural population of Mozambique, it is necessary to evaluate the occurrence of aflatoxins and the carcinogenic risk of exposure to these contaminants. In chapter I of this study, a theoretical foundation on the evolution of the concept of mycotoxins is presented and, finally, the evaluation of the carcinogenic risk is discussed. In chapter II, it is presented the report of the investigation of the occurrence of these contaminants in maize flour produced and commercialized in the city of Nampula, Mozambique and its carcinogenic risk evaluation.

    Objectives: To verify the occurrence of aflatoxins B1, B2, G1 and G2 in maize flour produced and commercialized in Mozambique in the period from January to March 2022 and assessment of carcinogenic risk due to its consumption.

    Methodology: Maize flour samples (n=30), were collected from five factories. For humidity analysis, two grams of the sample was weighed into a previously dried and weighed porcelain capsule. The capsule was placed in an oven at 105ºC until it reached constant mass. The aflatoxin contents were determined by high performance liquid chromatography (HPLC) with fluorescence detector after extraction in immunoaffinity columns and derivatization with trifluoroacetic acid. The daily intake was estimated according to the proposal of Jardim and Caldas (2009). The carcinogenic risk assessment was based on the calculation of the Margin of Exposure (MOE) for two distinct scenarios: men and women.

    Results and Discussion: The mean moisture content in the collected samples was 10.5% ± 0.79, ranging from 9.1% to 12.2%. Aflatoxins B1, B2, G1 and G2 were detected in 20% of the samples (n=6), and in 23.3% (n=7) of them had contamination of at least two or three of the aflatoxins. In 56.7% (n=17), of the samples no AFs were detected.  The contamination of AFB1 ranged from 0.25 to 0.35 ug.kg-1, and the levels of total aflatoxins ranged from 0.55 and 1.05 ug.kg-1, with a mean of 0.89 ug.kg-1being below the MRLs (10 ug.kg-1and 4 ug.kg-1) for Mozambique and the European Union, respectively. The calculated MOE for men was 243 and for women 231, thus being many times below the negligible risk cutoff point which is 10,000.

    Conclusions: Consumption of maize flour in Mozambique poses a potential risk of hepatocellular carcinoma from aflatoxin exposure, due to the high consumption of this food product that is a staple of the diet in most African countries.

7
  • PIETRO CARLOS GONÇALVES CONCEIÇÃO
  • Characterization of extruded films based on poly (butylene succinate) (PBS) blends for use of partially degraded poly (butylene adipate-co-terephthalate) (PBAT)

  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • JOYCE BATISTA AZEVEDO
  • SAMANTHA SERRA COSTA
  • Data: 08-ago-2023


  • Resumen Espectáculo
  • Biodegradable polymers are a sustainable alternative to conventional petroleum-derived polymers. With the growing awareness of the environment, the demand for biodegradable plastics has increased considerably in recent years. However, these biodegradable materials have disadvantages in their physical and chemical properties compared to conventional polymers. After their shelf life, biodegradable polymers can undergo depolymerization, destruction or degradation of their polymer chain during storage, which makes partially degraded. This can prevent its use for many applications. The reuse of these materials that have exceeded the deadline stipulated by the manufacturer can contribute to reducing the cost of production and reducing the consumption of non-renewable sources. An alternative for recovering these partially degraded materials is by obtaining films through polymeric blends. With this, the objective of this work is to take advantage of a PBAT (Polybutylene adipate-co-terephthalate), which exceeded its useful life by approximately 100 months, by obtaining films through blends with a PBS (Polybutylene Succinate) (under normal conditions), as well as to characterize the physical, chemical and morphological properties of these films. The blends were formulated in five different proportions of PBS/PBAT – 100/0; 80/20; 70/30; 60/40; 50/50 (F1, F2, F3, F4, F5, respectively) – and the films were obtained by extrusion. The films were characterized by Fourier transform infrared analysis (FTIR-ATR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), mechanical tensile test and vapor permeability of water. The result of the FTIR analysis showed that there were no significant changes in the chemical structure, except for the F3 formulation, which showed the highest absorption peak at 1700-1740 cm-1. The XRD result demonstrates that there is a slight tendency for the crystallinity indices to decrease from F1 to F5, but no significant mass loss event was noted in the TGA analysis, except for F3 around 520°C, which is directly related to the heterogeneity of the constituents in the blend. SEM clearly shows a defective and heterogeneous structure of the F1-F5 constituents, which is also associated with limited miscibility between PBS and PBAT. The brittle and partially degraded structure of PBAT caused a decrease in the tensile strength limit and an increase in the water vapor permeability of the films. It was possible to take advantage of PBAT by blending it with PBS, and the concentrations of PBAT in the blends strongly influence the physical and chemical properties of the analyzed films. It is possible to make films through blends with a partially degraded PBAT together with PBS, in some degree of PBAT concentration in the films, which may be useful in some application depending on its respective purpose.

8
  • LARISSA DA SILVA SANTOS
  • Contents of arsenic, cadmium and lead in school meals and their risk assessment in municipalities in Bahia, Brazil
  • Líder : JOSE ANTONIO MENEZES FILHO
  • MIEMBROS DE LA BANCA :
  • JOSE ANTONIO MENEZES FILHO
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • VERA AKIKO MAIHARA
  • Data: 31-ago-2023


  • Resumen Espectáculo
  • The occurrence of chemical contaminants in food is widely discussed in the literature, from deleterious effects caused to health, main food sources of exposure and which populations are most affected. Children, due to several factors, are more exposed than adults to these elements, from the social context in which they are inserted to physiological particularities that affect the metabolization of toxic elements to which they are exposed. School meals represent a significant apport of nutrients for the children in Brazil, especially those in conditions of social vulnerability. In this contexto, the National School Feeding Program (PNAE) is inserted, which aims to ensure safe meals from a nutritional point of view, guaranteeing caloric intake and food free of contaminants. In light of the foregoing, the objective of this study was to evaluate the levels of arsenic (As), cadmium (Cd) and lead (Pb) in meals served in public elementary schools in four municipalities in the state of Bahia, Brazil, and the health risks to students arising from consumption of these meals. 96 samples were collected, identical to those offered to students from the municipal network of 16 schools in four municipalities in Bahia in two semesters in 2016 and 2019, lyophilized, and mineralized in a microwave oven. Then, the levels of As, Cd and Pb were determined by Graphite Furnace Atomic Absorption Spectrometry (GFAAS). The samples were classified into different food groups, according to the information collected by the school cooks for further risk assessment of exposure to these contaminants. The risk assessment strategy was based on the calculation of the risk quotient (RQ) for each element, in the following scenarios: early childhood education, high school and the general average age of students assisted by the National School Feeding Program (PNAE). The results showed that none of the samples reached or exceeded tolerable levels for the analyzed metals. Pb obtained the most expressive result, reaching maximum levels of 0.039-0.157 mg.kg-¹. The food groups that contributed the most to Pb exposure were starchy foods, fruits and vegetables, as well as milk and dairy products. In the case of As, preparations containing cereals/starch and milk/by-products were the ones that contributed the most, being the only element that surpassed the PTWI proposed by JECFA. Therefore, the values of toxic metals obtained were below the levels allowed by the country's legislation and did not represent a risk of exposure of schoolchildren via school meals, however, the high PTWI of As, being a toxic element that has a long half-life, is worrying.

9
  • SINARA SILVA NEVES MACHADO
  • SUSTAINABLE POTENTIAL OF OBTAINING CHITIN AND CHITOSAN FROM INSECT PRODUCTION WASTE
  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • DENILSON DE JESUS ASSIS
  • RENATO SOUZA CRUZ
  • Data: 29-sep-2023


  • Resumen Espectáculo
  • The production of insects on a large scale is becoming common all over the world, generating a significant amount of waste from these creations. An example are the exoskeletons resulting from the initial growth of insects (exchanges) and dead adults at the end of their life cycle. These residues are chitin sources with potential for technological and sustainable application, still little explored. Thus, this work aimed to obtain and characterize chitin and chitosan from the exoskeletons (larval stage and adult insect) of the creation of three specimens of insects, Tenebrio molitor, Zophobas morio and Blaptica dubia. The exoskeletons were separated, dried in an oven with air circulation (50ºC/12h) and kept under refrigeration (-20ºC) until analysis. For chitin extraction, a chemical method was used in three stages: demineralization, deproteinization and depigmentation. Chitosan was obtained from chitin deacetylation in sodium hydroxide solution (60% m.v-1). The chitin and chitosan samples were characterized by means of infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. Chitosan was also observed for the Degree of Deacetylation (DD), solubility and rheological parameters. The yield of chitin and chitosan in percentage of dry mass of exoskeletons ranged from 11.21 to 20.89% and 6.26 to 7.07%, respectively. The sample with the lowest percentage of chitin was the exoskeleton of the larva of Zophobas morio and the one with the highest percentage was the exoskeleton of the beetle of Zophobas morio. Difractograms confirmed the obtainment of chitin and chitosan from insect residues, with the presence of α-chitin. The relative crystallinity indices (ICR) of chitin ranged from 65.9-89.2%, the TG/DTG curves showed two typical thermal events, the first being associated with moisture loss and the second with thermal decomposition of samples with Tonset from 197.70 to 427.95ºC. The chitosan samples showed ICR from 65.3 to 80.2% and the TGA curves showed Tonset between 245.80 to 329.90°C. Chitosan solutions showed a pseudoplastic behavior with apparent viscosities ranging from 195.96 to 249.86 mPa.s. The degree of deacetylation ranged from 75.75 to 89.21% and the solubility from 69.88 to 94.39%. The micrographs revealed varied surfaces including pores, roughness and fibrillar shapes, presenting similar results to commercial chitosan. In general, the characterization of biopolymers extracted from insect residues showed high similarity in relation to those obtained from conventional sources. The results of the present study reinforce the feasibility of using alternative sources of chitin and chitosan, providing the use of residues from the large-scale production of insects, contributing to sustainability.

10
  • JOELAINE DE JESUS SANTANA
  • SENSORY ANALYSIS AND VOLATILE PROFILE OF CHOCOLATES PRODUCED 
    FROM SAMPLES WITH POTENTIAL FOR FINE COCOA
  • Líder : SERGIO EDUARDO SOARES
  • MIEMBROS DE LA BANCA :
  • SERGIO EDUARDO SOARES
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • ADRIANA CRISTINA REIS FERREIRA
  • Data: 31-oct-2023


  • Resumen Espectáculo
  • One of the major trends in the international market is the production of “original cocoa”, for the production of gourmet chocolate with a high cocoa content. The fine and aroma cocoa is identified by presenting different flavors, from fruity, floral, woody, among others. The present work aimed to characterize, through the methodology of the Quantitative Descriptive Analysis (QDA), to trace the sensorial profile for the characterization of the production of fine chocolate with selected almonds from municipalities in Bahia and to apply the acceptance test. The results of the sensory analyzes were submitted to ANOVA and the Tukey test was applied (p<0.05). Correlation of sensory data was determined by Partial Least Squares (PLS). For such procedures, the statistical program XLSTAT® 2021 and SAS were used. The Quantitative Descriptive Analysis (ADQ®) revealed that the samples differ in fifteen of the sixteen evaluated descriptors, except for the sweet aroma. In the radar chart, the samples from the municipalities of Jaguaquara and Ilhéus showed a more intense brown color, greater brightness, a more intense sweet taste, as well as a greater intensity of the buttery flavor and buttery aroma attributes of these samples. In the PLS it was observed that the attributes brown color, brightness, buttery aroma, sweet taste, fruity flavor, buttery flavor, were positively correlated with the acceptance of chocolate, as well as in the ANOVA where it was possible to verify that the samples from the municipalities of Jaguaquara and Ilhéus presented greater intensity in the mentioned descriptors. In consumer tests, the samples did not differ significantly from each other in the texture attribute and received the highest scores for the overall quality and appearance attribute. The samples from Camacan, Uruçuca and Floresta Azul, obtained less acceptance among consumers, being characterized by the attributes cocoa flavor, acid taste, bitter and astringent taste. In the acceptance test, no significant differences were found (p < 0.05) for the texture attribute. It is concluded that the samples from the municipalities of Jaguaquara and Ilhéus presented special characteristics of the attributes that have potential for the production of fine chocolates.

11
  • DEISE AZEVEDO SILVA
  • HOME-BASED WORK AND FOOD DELIVERY, IN SALVADOR-BA: CONTEXTS OF THE PANDEMIC AND INFORMALITY

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • CRISTIAN OLIVEIRA BENEVIDES SANCHES LEAL
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • YARA OYRAM RAMOS LIMA
  • Data: 06-nov-2023


  • Resumen Espectáculo
  • The production and sale of food at home is a category of the informal sector that has been little investigated. In Brazil, this is an activity that grows every day, due to two contexts: the pandemic situation caused by Covid-19, marked by the establishment of social isolation measures for the population and adaptations in the food service sector, to serve via delivery; and the context of economic crisis and rising unemployment, in which many people found this activity an alternative for survival, although it represents yet another form of precarious work and social vulnerability for those involved. Thus, the objective of this study is to characterize the informal work at home and the food trade, in the delivery modality, in the city of Salvador-Bahia and metropolitan region. A cross-sectional, exploratory study, with a quantitative approach, will be carried out with workers who produce food at home and deliver these finished products via delivery. Data collection will use a semi-structured, pre-tested questionnaire to be completed by workers via the internet (Google forms). The questionnaire is organized into five blocks, considering the following dimensions: Block 1 – Worker identification; Block 2 – Working with food at home; Block 3 – Food hygiene; Block 4 - Opinion; Block 5 – Covid-19 Pandemic. With the study, it is expected to contribute to the characterization of the informal home food trade, in the delivery modality, in the city of Salvador-BA and metropolitan region, in order to discuss the social and economic aspects, the hygienic-sanitary issue and the perception of sellers in relation to their work. Also, collaborate in the generation of subsidies for the establishment of public policies and for the development of intervention actions, in order to help in the better organization of the segment and in the reduction of sanitary risks.

12
  • WILTON AMARAL DOS SANTOS
  •  

     
     
  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • ERNESTO ACOSTA MARTÍNEZ
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • WILDER DOUGLAS SANTIAGO
  • Data: 07-nov-2023


  • Resumen Espectáculo
  •  

     
     
13
  • LEON SACHA VIEIRA OLIVER
  • Physicochemical composition, metabolomic profiles and acceptability of Catharina Sour beer made with Caatinga passion fruit and using different fermentation methods

  • Líder : ALINE CAMARÃO TELLES BIASOTO
  • MIEMBROS DE LA BANCA :
  • ALINE CAMARÃO TELLES BIASOTO
  • ARÃO CARDOSO VIANA
  • DEBORAH MUROWANIECKI OTERO
  • Data: 29-nov-2023


  • Resumen Espectáculo
  • Catharina Sour is a Brazilian beer style that has been internationally recognized, requiring the presence of lactic acid and the addition of fruits. The objective of this study was to evaluate the influence of two yeast genera on the metabolic profile and acceptability of Catharina Sour beer brewed with Caatinga passion fruit (Passiflora cincinnata Mast). For the traditional method (kettle sour), lactic fermentation was followed by alcoholic fermentation with the addition of Lactobacillus buchneri bacteria and American Ale yeast Saccharomyces cerevisiae. The traditional method was more effective for producing Catharina Sour beer due to its superior efficiency in the fermentation process, higher production of ethanol (32.75 g L-1), glycerol (4.65 g L-1), lactic acid (4.71 g L-1), as well as sugars and phenolic compounds. However, the study highlights the potential of the Lachancea thermotolerans yeast, which enables the production of well-accepted beers at a lower production cost. Overall, the addition of Caatinga passion fruit pulp enriched Catharina Sour beer in terms of phenolic compounds, providing the beverage with levels of myricetin, hesperidin, trans-caffeic acid, trans-resveratrol, and procyanidin B1, while increasing the concentrations of (+)-catechin and procyanidin A2. Thus, the addition of fruits to beer, such as Caatinga passion fruit, not only promotes innovation, typicity, and product improvement but also enhances its nutraceutical aspects, making moderate consumption beneficial for consumers' health.

14
  • MORENA SENNA SAITO
  •  

     

    CHARACTERIZATION OF KOMBUCHAS BASED ON SPECIAL ARABIC COFFEE (COFFEA ARABICA) AND GREEN TEA (CAMELLIA SINENSIS) AFTER THE FIRST FERMENTATION

     
  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MARTA TOLEDO BENASSI
  • ADRIANA LUCIA DA COSTA SOUZA
  • Data: 13-dic-2023


  • Resumen Espectáculo
  • There is a continuous search for a higher quality of life and foods that promote human health are a constant presence in this new custom. Kombucha (Medusomyces Gisevii Lindau) is a drink of Asian origin, considered healthy and which is increasingly gaining ground in the functional foods market. Its consumption is associated with some health effects such as improving gastrointestinal functions, reducing blood pressure, improving the liver, improving the immune system, among others. Another drink that has several proven health benefits, such as its bioactive compounds, is coffee. Special coffee has this name because it has better processing, using only coffee beans of higher and better quality than traditional beans. The objective of this study was to sensorially and physically-chemically characterize the green tea-based kombucha drink with the addition of special coffee in the first fermentation, using the proportions of 80% green tea and 20% special coffee, 60% green tea and 40% special coffee, 40% green tea and 60% special coffee, 20% green tea and 80% special coffee, that is, using a simple planning for 4 formulations. After studying the beverage preparation process, each formulation underwent physical-chemical and sensory analyses. The results showed that the process was efficient, as all formulations met IN 41/2019 that characterize the kombucha drink. In addition to presenting sensorial characteristics with good acceptance.

     
15
  • LIVIA DE MATOS SANTOS
  • SUSTAINABLE INNOVATION: USE OF COCOA BY-PRODUCT AS AN ALTERNATIVE SOURCE IN THE DEVELOPMENT OF A FERMENTED BEVERAGE

  • Líder : CAMILA DUARTE FERREIRA RIBEIRO
  • MIEMBROS DE LA BANCA :
  • CAMILA DUARTE FERREIRA RIBEIRO
  • DEBORAH MUROWANIECKI OTERO
  • RICARDO BIZOGNE SOUTO
  • Data: 18-dic-2023


  • Resumen Espectáculo
  • Cocoa is a globally significant agroindustrial product and it stands out as a considerable driver of the world economy. However, approximately 80% of this fruit is not directly consumed, constituting coproducts generated during its processing, which are often discarded. Nevertheless, these coproducts exhibit nutritionally relevant attributes. The present study aimed to contribute to the valorization of cocoa coproducts through a prospective field and the development of a fermented beverage. To achieve this, a prospective study was initially conducted on scientific (Web of Science, Scopus, Medline/Pubmed) and technological (Espacenet and Instituto Nacional de Propriedade Industrial – INPI) bases. The utilization of cocoa and its coproducts was investigated through search terms "Cocoa* OR Theobroma cacao AND by-product*” and "Cocoa* OR Theobroma cacao AND by-product* AND A23G" and "Cocoa* OR Theobroma cacao AND by-product*” for scientific and technological searches, respectively. A total of 144 articles and 73 patent documents were analyzed, encompassing agricultural and biological fields, with 68% of the publications. Co-occurrence analysis highlighted studies focusing on the biofunctional composition of these coproducts. The oldest patent document on the subject dates back to 1913, with a significant growth observed after 2020. In the scientific search, the shells accounted for 54%, and the tegument for 41%, were the most studied coproducts. In the technological search, in Espacenet, shells and tegument reached 68% and 31%, respectively, while in INPI, values of 9% and 26% were recorded. Brazil (24.4%) and Italy (19.3%) lead scientific publications on the topic, while the United States (29%) and Japan (21%) lead patent documents on Espacenet. The study suggests remarkable technological possibilities for the future. By analyzing the identified gaps, a fermented beverage similar to kombucha was developed using cocoa almond husk (CAC). Its fermentative behavior over 24 hours at different concentrations (0.7%, 1.5%, and 2.3%) was analyzed. Alcoholic content, antioxidant activity, symbiotic culture structure, and physicochemical characteristics during 12 days of storage at 2.7 ± 0.06 °C were investigated. The results for the formulations demonstrated the absence of alcoholic content, the presence of antioxidant activity, with emphasis on the sample with a higher CAC content, and dense structures in symbiotic cultures. pH ranged from 3.58±0.01 to 3.61±0.02, soluble solids (ºBrix) from 7.03±0.06 to 7.13±0.06, and titratable acidity (g acetic acid/100 mL) from 0.29±0.00 to 0.31±0.01. A significant influence of CAC content was evidenced in the increase in luminosity from 90.25±0.01 to 92.45±0.06 and in reddish hue, from 2.01±0.01 to 1.53±0.07, along with variations in total phenolic compound levels (mg GAE/mL) from 2.33±0.00 to 1.73±0.00. Regarding sensory profile, overall acceptability ranged from 6.1 to 6.4, and purchase intention from 2.98 to 3.20. High-throughput genetic sequencing revealed bacterial genera Komagataeibacter, Acetobacter, Gluconacetobacter, and yeast genera Brettanomyces, Pichia, Zygosaccharomyces. In light of the results, the incorporation of CAC in the development of a fermented beverage demonstrated significant potential, contributing to the advancement of scientific and technological knowledge of cocoa industry-derived coproducts and their potential applications in the food industry.

2022
Disertaciones
1
  • CAMILA CRISTINA AVELAR DE SOUSA
  • Analysis of total and saturated fat contents described on the labels of meat products commercialized in Brazil.

  • Líder : CARLOS PASQUALIN CAVALHEIRO
  • MIEMBROS DE LA BANCA :
  • CARLOS PASQUALIN CAVALHEIRO
  • MARION PEREIRA DA COSTA
  • VANESSA BORDIN VIERA
  • Data: 28-ene-2022


  • Resumen Espectáculo
  • Meat and meat products are important sources of protein in diet. However, its excessive consumption is related to non-communicable chronic diseases, such as cardiovascular diseases. In order to investigate the content of total and saturated fats present in meat products, a survey of nutritional information on websites of Brazilian industries that sell these foods was carried out. In total, 1600 products were listed and classified into 20 groups and 7 types, as well as “low”, “medium” or “high” in total and saturated fat according to legislation. The highest contents of total and saturated fats were found in the groups bacon (35,33 and 12,50 g/100 g), salame (26,00 and 9,25 g/100 g) and copa (22,00 and 9,75 g/100 g), while the lowest were found in the groups lombo (5,35 e 2,00 g/100 g), apresuntado (5,33 and 2,00 g/100 g) and embutido cozido (2,04 and 0,50 g/100 g). Among the types, the highest contents of total and saturated fats were registered in defumado (35,33 and 12,50 g/100 g) and fermentado (26,00 e 9,00 g/100 g), and the lowest in the types cozido (14,50 and 4,75 g/100 g) and frescal (12,00 and 4,00 g/100 g). For total fats, 9.2% of the products were classified as “low”, 52.9% as “medium” and 37.9% as “high”. For saturated fats, 14.3% were classified as “low”, 48.3% as “medium” and 37.4% as “high”. In total, 30 products had fat content above the provided in legislation. Although most of the products listed were classified as medium in total and saturated fats, the values of products classified as high were expressive. Furthermore, the amount of reduced-fat products available on the market is still very small (2.67%). Thus, it is necessary to consume meat products moderately, in order to avoid especially the excess of saturated fats in diet.

2
  • GABRIELA SANTOS DA CONCEICAO
  • STREET FOOD IN THE SPACE OF A PUBLIC UNIVERSITY: CONSUMPTION PRACTICES AND STUDENT'S PERCEPTIONS

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • DENISE NUNES VIOLA
  • RITA DE CASSIA COELHO AKUTSU
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 25-mar-2022


  • Resumen Espectáculo
  • The food consumption pattern of the world population has been changing over time, and one its characteristics is the food away from home, which includes street food (SF). In developing countries, due to the easy access and low price SF serves part of the low-income population, especially workers and students. However, there are few studies in the literature considering the factors that lead students to seek this service. Thus, this study aimed to characterize consumption practices and perceptions about street food among students of a public university in Brazil. The research was an exploratory, quantitative study, with 364 college students from a public institution. Through a structured self-administered questionnaire, composed of 21 questions, in three dimensions: Identification; Habits and food practices; and Perception of food practices and the SF. Data were treated by descriptive analysis, bivariate, and multinomial logistic regression (p< 0.05). In the sample, predominant were women (59.3%), aged 18 to 22 years, income from two to four minimum wages (56.0%), undergraduate students (87.4%), from the health (32.1%) and exact areas (30.2%), who lived with their families (78.8%). As for eating habits, most consumed SF weekly (38.2%), especially at kiosks and street vendors, with a preference for snacks. The factors that influenced consumption the most were taste (70.1%), price (69.5%), hygiene (67.0%), quality (66.5%), and convenience (54.9%). On the other hand, high concern (71.7%) was observed for SF safety, and a lower relevance for health and nutrition. Socioeconomic variables such as gender, course and income, showed significant associations with the factors involved in consumption. The consumption of the SF was more attracted to benefits such as practicality and comfort, quality, hygiene, price and flavor, which will prevail, in relation to concerns with the use of food and with aspects of health and nutrition.

3
  • SARITA BRITO E SILVA ZUMAÊTA
  • Know-how and physico-chemical and technological characteristics of Copioba and common cassava flours:
    case study, in Copioba Valley, Bahia

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • MONICA RIBEIRO PIROZI
  • LUCIANA ALVES DE OLIVEIRA
  • Data: 20-abr-2022


  • Resumen Espectáculo
  • Cassava flours produced in Copioba Valley are traditional products and recognized for their quality, with emphasis on Copioba flour. Despite this prestige, little is known about its know-how and characteristics that distinguish it from common flour. Thus, this work aimed to characterize the know-how and indicators of physical-chemical and technological quality of Copioba flour and common flour. The study was conducted in two steps: in the first, the work focused on the know-how of Copioba cassava flour (FCOP), comparing it to the common process (FCOM), in a case study, with a producer of great reputation. For this, an on-site follow-up was carried out, with data collection through observation of activities, dialogue with the producer, field diary records and photographic takes, observing the production stages, with a work script. The time of each production stage and the roasting temperature were monitored. In the second stage of the study, it was necessary to analyze Copioba and common cassava flour, from two roots varieties, obtained from this producer, in terms of physical-chemical and technological indicators - granulometry, color, physical-chemical characterization, starch morphology and pasting properties and texture. As a result of the first stage, it was found that the main differences in production included five stages. On peeling/scraping, the bark and peel removal was complete, for FCOP, leaving fragments and brown spots on FCOM. The grinding of FCOP was carried out in two stages and occurred in a single stage for FCOM, obtaining a thick mass. After pressing, for FCOP, the crumbling was done in an electric crusher, followed by sieving, prior to roasting; for FCOM, the grinding was manual and there was no sieving, resulting in larger, non-uniform aggregates. FCOP roasting took a shorter time (average 60 min), with a higher final temperature (125ºC), recording 80 min and 110ºC for FCOM – the opposite, probably due to the larger size of the clusters of this mass. For both flours, the producer conducted the processes using his traditional knowledge and accumulated experience, being the exclusive holder of a centuries-old know-how, which differentiates the products. As for the analytical results, the flours, both FCOP and FCOM, were identified in the dry group, fine class, with a natural color between white and yellow, with low moisture content (2.92-8.17%), ash (0. 97-1.34%) water activity (0.07-0.40), proteins (0.70-1.44%), lipids (0.19-0.44%) and high carbohydrate content (97.04-98.06%). All samples were classified as acidic (8.41-8.62 meq NaOH 0.1N/100) and preserved native starch granules. Among pasting properties, values of peak viscosity, breakdown and setback showed potential for application as thickener and gelling agent in the food industry. From the findings, it is concluded that differences in the application of know-how resulted in different flours, with more careful elaboration of the FCOP, which justifies its notoriety. As for the physicochemical and technological characteristics, under the conditions of this study, although the results did not allow a precise differentiation of the two flours, the possibility of their uses as a technological adjunct was evidenced.

4
  • LUCCAS DE JESUS PEREIRA DOS SANTOS
  • Sodium content described in labeled meat products sold in Brazil

  • Líder : CARLOS PASQUALIN CAVALHEIRO
  • MIEMBROS DE LA BANCA :
  • CARLOS PASQUALIN CAVALHEIRO
  • JOSE GIVANILDO DA SILVA
  • MARION PEREIRA DA COSTA
  • Data: 22-jul-2022


  • Resumen Espectáculo
  • Brazil is one of the largest meat producers in the world and industrializes from several meat products, which are important sources of protein, vitamins and minerals, however some of these products may contain high levels of sodium and fat, which if consumed in excess can cause problems of health. In view of this, a survey of the nutritional information of meat products was carried out, regarding the sodium content available on brazilian industry websites. A total of 1600 products were evaluated, being listed in 20 groups and classified as high (>1.5 g/100 g), medium (> 0.3 and ≤ 1.5 g/100 g) and low (≤ 0.3 g/100 g) in sodium according to global and national parameters. Jerked beef, charqui and salted product had the highest sodium content of 5.48, 5.21 and 2.58 g/100 g, respectively. The lowest values were found for pâté, quibe, seasoned meat, hamburger, meatballs and breaded which presented values of 0.77, 0.66, 0.65, 0.65, 0.60 to 0.54 g/100 g respectively. As for the sodium content, 283 (17.68%) products were classified as high in sodium, 1244 (77.75%) as medium and 73 (4.56%) as low. As for the claim of reduced sodium meat products, there are still few products, only 35 (2.18%) of the analyzed products had a reduced sodium claim. Given the large number of meat products (90%) being classified as high and medium in sodium content, it is necessary to reformulate meat products and pay greater attention to health agencies, aiming for the industry to produce healthier meat products.

5
  • FERNANDA ANTONIA DE SOUZA OLIVEIRA
  • Analysis of volatile compounds from cocoa nibs grown in southern Bahia

  • Líder : SERGIO EDUARDO SOARES
  • MIEMBROS DE LA BANCA :
  • ADRIANA CRISTINA REIS FERREIRA
  • ELIETE DA SILVA BISPO
  • SERGIO EDUARDO SOARES
  • Data: 05-ago-2022


  • Resumen Espectáculo
  • The volatile aromatic compounds are the main factors that contribute to the acceptability of cocoa products. Factors such as geographic origin, climate, soil and post-harvest conditions, directly affect the quality of the final product. The aim of this study was to analyze the volatile compounds present in cocoa specimens in the south of Bahia, in addition to establishing standard relationships between their harvest period (main and early season) and the location of origin. The roasted cocoa nibs were weighed, crushed, and exposed to the Headspace using the Solid Phase Microextraction (SPME) technique. The analysis of volatile compounds was performed using a chromatograph coupled to the mass spectrometer and the flame ionizer, to identify and semi-quantify the volatiles. The study showed the presence of more than 50 different chemicals. Volatile compounds such as tetramethylpyrazine, acetic acid and phenyltyl alcohol were found in all samples tested. Pyrazines, acids and esters represent most of the active aromatic compounds identified in all samples. The multivariate statistical analysis of the results was performed with the PCA biplot and the hierarchical cluster analysis, showing the grouping of the samples based on the different locations and harvest period.

6
  • JAMILLE DA CONCEIÇÃO SOUZA
  • Therapeutic Potential of Omega-3 in Sickle Cell Disease: a qualitative systematic review study
  • Líder : RICARDO DAVID COUTO
  • MIEMBROS DE LA BANCA :
  • RICARDO DAVID COUTO
  • CAMILA DUARTE FERREIRA RIBEIRO
  • LILIANE DE JESUS BITTENCOURT
  • Data: 17-ago-2022


  • Resumen Espectáculo
  • The present study sought to analyze the therapeutic potential of omega-3 in sickle cell diseases with a focus on sickle cell anemia. Sickle cell anemia is among the most prevalent hemoglobinopathies in the world and is therefore a global public health issue. Also known as hemoglobin S disease, sickle cell anemia comes from a genetic modification on chromosome eleven, in which the replacement of the nitrogenous base adenine by thymine results in the replacement of the glutamic amino acid by valine, originating hemoglobin S. This modification is responsible for triggering complications at the systemic level, including: vaso-occlusive crises, hemolysis, chronic anemia, infarcts at the micro and macrovascular levels and chronic inflammatory state. The n-3 is a polyunsaturated fatty acid, with an important anti-inflammatory action well delineated in the literature, its benefits in terms of cardiovascular health and diseases related to inflammation are well highlighted, in this context, it is suggested that n-3 has important therapeutic potential for people with sickle cell disease. Thus, the present study is structured into two chapters, chapter one, the theoretical framework and chapter two, the manuscript with a qualitative systematic review (RSQ) outline, has the general objective: to highlight the therapeutic potential of n-3 and its contribution to the quality of life of people with sickle cell disease. This protocol has been designed in accordance with the preferred reporting item guidelines for systematic review (qualitative and quantitative) and protocol checklist. Registered in the International Prospective Registry of Systematic Assessments under registration ID: CRD42020221207. The search strategy used was PICOS. The search was performed by combining the descriptors, using the terms sickle cell anemia and n-3, which were obtained from the Virtual Health Library, DeCS/MeSH. The databases used were: Scopus, PubMed, ScienceDirect, Web of Science and Virtual Health Library. The assessment of the risk of bias in the primary studies was carried out using the Cochrane Risk of Bias tool for Randomized Controlled Trials and the assessment of the set of the quality of evidence performed using the Grading of Recommendatons Assessment, Development and Evaluaton tool. From the 177 records identified, seven were selected for data collection. The main outcome of this study is based on the contribution of an oral supplementation of n-3 DHA and EPA to improve the quality of life of people with sickle cell disease. For this main outcome, the items analyzed were: less activation of pro-inflammatory substances linoleic acid, nuclear factor KappaB, arachidonic acid, leukocytes and integrins; reduced activities of antioxidant enzymes, glutathione peroxidase, copper and zinc dependent superoxide dismutase, and phosphatidic acid phosphates; higher concentrations of DHA and EPA in erythrocyte membranes; better hemostatic pattern with plasma reduction of prothrombin and D-dimer, reduction of vaso-occlusive crises, reduction of pain episodes, hospitalization and improvement in school attendance, such effects possibly related to reduced hemolysis and prothrombotic activity. Thus, with the improvement of such clinical signs, the reflex for the patient is a significant improvement in their quality of life condition, and the study aims to support the emergence and updating of new public policies for people with sickle cell disease.

7
  • VÍTOR MOREIRA ROCHA
  • DETERMINATION OF PHENOLIC COMPOUNDS, COUMARINS AND ANTIMICROBIAL ACTIVITY OF PROPOLIS FROM STINGLESS BEES FROM THE STATE OF BAHIA, BRAZIL

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • CAMILA DUARTE FERREIRA RIBEIRO
  • LETICIA DE ALENCAR PEREIRA RODRIGUES
  • MARCELO ANDRES UMSZA GUEZ
  • Data: 25-ago-2022


  • Resumen Espectáculo
  • Bees are one of the main pollinators on the planet, being responsible for about 70% of the pollination of agricultural crops, in addition to being an essential part of the pollination of biomes, ensuring the preservation and continuity of plant species. With regard to stingless bees, these are stunted insects, manipulated for many centuries by indigenous populations and which are present mainly in the southern portion of the globe. Its rational creation is known as meliponiculture, which generates a portfolio of products, and among these products, propolis, which in recent decades has gained the interest of researchers mainly for its composition rich in phenolic compounds, but also other compounds such as coumarins, which has functional activities, in addition to so many other nutrients present. Propolis is an elaborated made up of plant parts, plant resin, wax, pollen and essential oils, however, these constituents vary according to the bee species, location, harvest season and management. Thus, propolis appears on the market as a natural product with technological capacity for use in cosmetics, pharmaceuticals and food. Its antioxidant, antimicrobial, anti-inflammatory, immunomodulatory, and antitumor powers are widely investigated and reported in the literature, however, research with stingless bee propolis is still very incipient. New molecules are often found in the composition of stingless bee propolis and its use has expanded to be applied against different microorganisms, given the problem of resistance to traditional antimicrobials. Therefore, the objective of this work is the determination of phenolic compounds and coumarins in the chemical profile of propolis from stingless bees and their use against microorganisms of food interest, Candida albicans. Enterococcus faecalis and Escherichia coli.

8
  • Tayane de Jesus Freitas
  • Application of microencapsulated edible oils in food: a study of patents and articles

  • Líder : CAMILA DUARTE FERREIRA RIBEIRO
  • MIEMBROS DE LA BANCA :
  • CAMILA DUARTE FERREIRA RIBEIRO
  • GIANI ANDREA LINDE COLAUTO
  • ITACIARA LARROZA NUNES
  • Data: 16-sep-2022


  • Resumen Espectáculo
  • Edible oils offer health benefits, such as the provision of bioactive compounds and essential fatty acids, and therefore, different industrial sectors have invested in technologies that protect and preserve these oils and their components, such as microencapsulation. In this context, the present proposal had as general objective to analyze the applications of microencapsulated edible oils in foods in the technological and scientific context. To select the relevant patents on the microencapsulation of oils and their incorporation into foods, the search was carried out in the Espacenet and National Institute of Industrial Property (INPI) databases. As for the search for articles on the use of microencapsulated oils applied to foods for fortification purposes, a search was carried out in ten databases. The data revealed that the first patent document was filed in 1999 and in 2015 there was a significant increase in the number of patents filed, with China ranking first in the development of microencapsulation technologies. Among the patents that mentioned the purpose of microencapsulation, the oxidative stability of the oils was the most cited objective. Both in patents and in scientific articles, the microencapsulation technique most used in the food industry was spray drying, soy lecithin and fish oil were the emulsifier and microencapsulated oil, respectively, most applied in food matrices. The wall materials most used in the patents were modified starch, maltodextrin and gum arabic, while in the articles they were maltodextrin, chitosan, gum arabic, sodium caseinate and whey proteins. Bakery and confectionery products, meat products and dairy products were the food groups most enriched with microencapsulated oils in both patents and articles. The stability studies presented in the articles showed that microencapsulation protects and preserves oils and their bioactive compounds, maintaining the quality and characteristics of foods. In view of the above results, it is concluded that the microencapsulation of edible oils has been expanding over the years and increasing the possibilities of use by the food industry, but, due to the scarcity of studies, the need for future research was identified to evaluate the bioaccessibility, bioavailability and cytotoxicity of these microencapsulated oils added to foods.

9
  • SUELEN NERIS ALMEIDA VIANA
  • THERAPEUTIC POTENTIAL OF PROBIOTICS IN THE TREATMENT OF COVID-19
  • Líder : MARIANA NOUGALLI ROSELINO
  • MIEMBROS DE LA BANCA :
  • MARIANA NOUGALLI ROSELINO
  • CARLOS PASQUALIN CAVALHEIRO
  • LUCAS MIRANDA MARQUES
  • Data: 30-sep-2022


  • Resumen Espectáculo
  • The new coronavirus (SARS-CoV-2) is the causative agent of the new global pandemic, which has already resulted in millions of deaths, affecting health and the world economy. The lack of specific therapies requires other strategies to prevent the incidence, recurrence and reduce the symptoms of this previously unknown viral respiratory infection. Probiotics are live microorganisms that, after oral administration, favor the health of the individual by modulating the composition of the microbiota of the gastrointestinal and respiratory tracts. Thus, different single or multivariate probiotic strains have been studied in order to clarify the mechanisms involved in the prevention and treatment of respiratory infections of viral origin. Therefore, this systematic review aimed to evaluate the antiviral and immunological effects of therapy with probiotic microorganisms on the prevention and treatment of respiratory infections such as those caused by SARSCoV-2 (COVID-19) by analyzing the results of clinical trials published in last 11 years. We reviewed the literature (June 2010 to June 2021) according to PRISMA criteria. The results support the assumption that the supplementation of probiotics are able to reduce the incidence and symptoms of respiratory infections, with performance being related through the use of isolated or combined strains, as well as the administration time. Published trials using this strategy in COVID-19 patients are still scarce, but trials are ongoing. The strategies are promising.

10
  • CLARIANE TEIXEIRA PESSOA MAMONA
  • UNCONVENTIONAL SUBSTRATES FOR THE DEVELOPMENT OF KEFIR DRINKS WITH PROBIOTIC POTENTIAL

     
  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • ACENINI LIMA BALIEIRO
  • ALINI TINOCO FRICKS
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • Data: 11-oct-2022


  • Resumen Espectáculo
  • Kefir is a fermented beverage developed by inoculating kefir grains into a given fermentative substrate. Brown sugar is known as the most common substrate for the preparation of water kefir. The present study aimed to evaluate the fermentation of kefir grains in different solutions containing brown, demerara, crystal, coconut and sugarcane molasses sugars. The fermentative substrates were developed considering a proportion of 10% of the respective sugar dissolved in water, with inoculation of 10% of kefir grains, to ferment for a period of 48 hours at room temperature. Analyses of pH, acidity, soluble solids, lactic and acetic acids, counts of lactic acid bacteria and yeasts were performed, as well as weighing of grains at 0h, 24h and 48h times. Their counts of lactic acid bacteria and yeasts were the highest at the end of fermentation, of 7.46 and 7.49 log CFU/mL, respectively, indicating probiotic potential. On the other hand, crystal sugar resulted in more discrete fermentation, with the lowest count of lactic acid bacteria (6.87 log CFU/mL in 48h time). In general, the results indicate potential applicability of alternative sources of sugars in the development of kefir beverages with different physicochemical and microbiological characteristics.

     
11
  • TAMIRES DOS REIS SANTOS PEREIRA
  • THE USE OF PROBIOTICS IN DIFFERENT PHASES OF HUMAN DEVELOPMENT: A SYSTEMATIC REVIEW ON THE BENEFITS AND CHANGES OF MICROBIOTA.

  • Líder : MARIANA NOUGALLI ROSELINO
  • MIEMBROS DE LA BANCA :
  • CARLOS PASQUALIN CAVALHEIRO
  • MARIANA NOUGALLI ROSELINO
  • RICARDO BIZOGNE SOUTO
  • Data: 29-nov-2022


  • Resumen Espectáculo
  • Probiotics are live microorganisms that, when administered in adequate amounts, confer health benefits on the host. For this reason, different probiotic strains have been studied in order to elucidate the benefits and changes that these can cause in the human microbiota in different age groups and health conditions. The evolution of studies encompasses the target audience, which previously was commonly composed of elderly people, children and adults with poor health, now also includes healthy individuals. This study aims to evaluate the changes and benefits that the use of probiotics confer on the intestinal microbiota of individuals from pregnancy to aging. This study is a systematic review based on the PICO model, used in EBP and recommended for systematic reviews. In this sense, we chose to use the PRISMA criteria. The results confirm the premise that the use of probiotics is a promising strategy in the modulation of the microbiota and that colonization of the intestine is closely related to the ingested probiotic strains and to the time of supplementation. The evidence presented in this review demonstrates that the use of probiotics has an impact on the human microbial profile at different stages of life and health conditions.

12
  • Raquel Nunes Almeida da Silva
  • BIODIVERSITY OF CULTIVABLE YEASTS ASSOCIATED WITH HONEY AND POLLEN OF STINGLESS BEES: Identification by mass spectrometry MALDI-TOF MS

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • LETICIA DE ALENCAR PEREIRA RODRIGUES
  • MARCELO ANDRES UMSZA GUEZ
  • RICARDO WAGNER DIAS PORTELA
  • Data: 14-dic-2022


  • Resumen Espectáculo
  • There are more than 500 species and 61 genera of stingless bees known worldwide, distributed in tropical America, Africa, Southeast Asia and Australia. Meliponines store food (pollen and nectar) in pots, aiming to ensure the survival of the colony during resource scarcity events. Pollen is the main source of proteins, lipids and vitamins for bees; nectar represents the main source of carbohydrates. The sensory, physical and chemical characteristics of honey and pollen from stingless bees are quite different when compared to that produced by Apis melífera bees. The work is presented in three chapters, organized as follows: Chapter I presents the Literature Review that aims to contextualize aspects related to stingless bees; the honey; the pollen; the physical-chemical characteristics and the microbiological quality of the products; the interaction of bacteria, fungi and yeasts; as well as addresses the MALDI-TOF mass spectrometry method; Chapter II presents the article “Stingless bees and the physical-chemical and microbiological characteristics of honey and pollen: Literature Review” which aims to briefly report some data presented in the Literature Review; and Chapter III presents the article “Diversity of yeasts in samples of honey and pollen from stingless bees in the state of Bahia: Use of the MALDI-TOF technique” which aims to identify, through MALDI-TOF mass spectrometry, the species of yeasts from honey and bee pollen Melipona scutellaris, Nannotrigona testaceicornes and Tetragonisca angustula. The data obtained from the Literature Review show that meliponine honey has a high moisture content ranging from 23 to 37,5%; total acidity 19,9 to 98,43 meq kg-1; and reducing sugars 43 to 75,5%. The pollen has a high moisture content ranging from 37,12 to 53,93%; proteins 19,7 to 37,63%; lipids 2,5 to 10,81%; and fiber from 9,3 to 13,65%. The bacteria most associated with stingless bees are Lactobacillus, Bacillus, Streptomyces, Clostridium, Staphylococcus, Streptococcus, Enterobacter, Ralstonia, Pantoea, Pseudomonas, Fructobacillus, Lysinibacillus and Neisseria. The most common yeasts observed in honey are Metschnikowia, Starmerella, Zygosaccharomyces, Candida, Debaryomyces, Dekkera, Kloeckera and Pichia. And the fungal filaments Aspergillus, Penicillium and Talaromyces. In pollen, the presence of bacteria such as Lactobacillus, Bifidobacterium and Bacillus can be observed; yeasts such as Starmerella and Zigosaccharomyces osmophilus, and the fungi Penicillium and Talaromyces. The article presented in Chapter III identifies nine yeast species: Candida maltosa, Candida norvegica, Kazachstania telluris, Schizosaccharomyces pombe, Candida shehatae var. insectosa, Candida guilliermondii, Brettanomyces bruxelensis, Kazachstania exigua, Candida lactis-condensi associated with honey and bee pollen Melipona scutellaris, Nannotrigona testaceicornes and Tetragonisca angustula. The development of new research on the physicochemical characteristics of honey and pollen from stingless bees can contribute to the construction of specific legislation that defines the identity and quality standards of these products; the identification of new species contributes to the knowledge of new species associated with products, as well as for biotechnological application

13
  • DENISE AGOSTINA GRIMAUT
  • EFFECT OF THE MIXTURE OF MODIFIED STARCH (RECTICULATED) ON THE PROPERTIES OF PBAT (POLY-BUTYLENE ADIPATE-CO-TEREPHTALATE) AFTER A LONG PERIOD OF STORAGE

  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • JOYCE BATISTA AZEVEDO
  • MARCELO ANDRES UMSZA GUEZ
  • Data: 16-dic-2022


  • Resumen Espectáculo
  • The increase in the consumption of packaged foods as a consequence of changes in the lifestyles of consumers, has led the industry to seek new sustainable and ecologically correct materials, with the purpose of replacing synthetic polymers to reduce the environmental impact caused by them. Among the possible substituents are biodegradable polymers, such as polybutylene adipate-co-terephthalate -PBAT, but the high production cost of it and subsequent long storage period presents losses in properties (ex. mechanical and thermal) similar to conventional plastics. The aim of this work was to evaluate the properties of films (blends) of polybutylene adipate-co-terephthalate - PBAT (after 1800 days of storage - DPBAT) with crosslinked starch (Cm) prepared by extrusion (blend) and thermocompression (film). Different ratios of DPBAT:Cm (70:30, 60:40 and 50:50 m/m) were prepared. The incorporation of Cm into DPBAT significantly changed the properties of the films, making them stiffer (increasing the Young's modulus by up to 50%) and increasing the thermal resistance of DPBAT. The presence of crosslinked starch in the films made them less hydrophobic (decreasing the contact angle and increasing moisture content), however, these parameters did not vary linearly with the content of crosslinked starch in the blend (DPBAT:Cm). The microscopic images show a non-homogeneous distribution of Cm granules in the DPBAT matrix. Thus, it can be seen that the films prepared with DPBAT showed a significant decrease in their mechanical parameters and in the thermal resistance, after long-term storage. However, the preparation of blends of DPBAT with crosslinked starch (Cm) promotes changes in the properties of the films prepared by thermocompression, which could be useful for disposable packaging.

2021
Disertaciones
1
  • AURORA BRITTO DE ANDRADE
  • EFFECT OF THE ADDITION OF SUB-FERMENTED COCOA BEANS ON THE PROCESSING OF INTENSE CHOCOLATES: SENSORY ACCEPTANCE AND STUDY OF THE VOLATILE PROFILE

  • Líder : ELIETE DA SILVA BISPO
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • PRISCILLA RFRAIM
  • THAIS MATSUE UEKANE
  • Data: 22-ene-2021


  • Resumen Espectáculo
  • Chocolate is a food worldwide appreciated by consumers, due to its unique flavor and beneficial health properties. These pro-health properties are caused by the presence of phenolic compounds in cocoa beans, which during processing are reduced. The fermentation stage is mainly responsible for the loss of phenolics, as it is directly related to the formation of flavor precursors. However, the sub-fermented cocoa beans have a higher concentration of phenolic compounds and some precursors already formed. Therefore, the objective of this work was to investigate the effect of adding sub-fermented cocoa mass (SCM) on the sensory characteristics and volatile profile during the processing. The 48-hour fermentation process for obtaining sub-fermented cocoa beans and 144 hours for completely fermented cocoa beans showed to be adequate. The cut test and fermentation index proved the quality of the obtained cocoa beans. In general, the chocolate samples that contained the highest concentration of SCM had lower scores for the flavor attribute, due to bitterness and astringency. The greatest positive acceptance was observed in samples with proportions of 80 % and 65 % of completely fermented cocoa mass (CFM). A total of sixty different compounds - esters (14), alcohols (8), pyrazines (8), ketones (7), furans, furones, pyranones and pyranones (6), acids (5), aldehydes (4), pyrroles (3), terpenic alcohols (3) and others (2) - were identified by HS-SPME-GC-MS. The PCA analyzes showed that the profile of volatile compounds was influenced by the fermentation process, reflecting satisfactorily on the quality of the chocolate.

2
  • SUELLEN ROCHA VIEIRA
  • OBTAINING, CHARACTERIZATION AND APPLICATION OF CELLULOSE NANOPARTICLES OBTAINED WITH IONIC LIQUID

  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • DENILSON DE JESUS ASSIS
  • JAMILLE SANTOS SANTANA
  • Data: 10-feb-2021


  • Resumen Espectáculo
  • Starch and chitosan films are promising alternatives for the packaging industry, however, they have limitations regarding their properties. An alternative to improve the characteristics is the incorporation of cellulose nanoparticles obtained by reusable solvents such as ionic liquid (LI). The aim of this study was to produce and characterize cellulose nanoparticles (NPC-DM) using microcrystalline cellulose (MCC) and LI (3-dimethylamino-1-propylammonium hexanoate - DMAPA [Hex]) and incorporate them in starch bionanocomposite films of cassava (4% w / v) and chitosan (2% w / v), using glycerol (25% w / w of starch and 30% w / w of chitosan) as plasticizer. The NPC-DM were evaluated for yield, Zeta potential, X-ray diffraction (XRD), transmission electron microscopy (MET), thermogravimetric analysis (TG) and infrared spectroscopy (FTIR). The NPC-DM were incorporated into matrices of cassava starch and chitosan in different concentrations (0.1; 0.2 and 0.3% of NPC-DM) and films without the addition of nanoparticles were used as controls. Bionanocomposites made by casting were evaluated for thickness, humidity, optical properties, water vapor permeability (PVA), mechanical properties and thermogravimetric analysis. The NPC-DM showed a yield of 27.82%, Zeta potential of -9.9 mV, crystallinity index of 67.6%, average crystal size of 5.01 nm, length of 320 ± 24 nm, diameter of 35 ± 15 nm and aspect ratio of 9.14. In addition, they were thermally stable and with a structure similar to MCC, indicating efficiency in the dissolution process with LI DMAPA [Hex]. The incorporation of different concentrations of NPC-DM did not change the thickness, moisture content and thermal stability for the two polymeric matrices, however, it did change the optical properties statistically. The incorporation of 0.2 and 0.3% of NPC-DM significantly reduced (P <0.05) the PVA in the two matrices (49.1% starch and 25.6% chitosan), compared to the control. In the starch matrix, the incorporation of NPC-DM decreased the tensile strength, Young's modulus and increased the elongation at break, compared to the control. However, for the chitosan matrix, the lowest concentrations (0.1 and 0.2%) of NPC-DM did not affect the tensile strength and elongation at break, compared to the control. It was possible to evaluate the use of LI DMAPA [Hex] as an alternative route for the production of NPC-DM, which when incorporated into bionanocomposite films, improve the barrier properties and change the mechanics depending on the polymeric matrix.

3
  • DANILO ALVES SILVA
  • Production and Characterization of Chlorella vulgaris biomass in Produced Water

  • Líder : JANICE IZABEL DRUZIAN
  • MIEMBROS DE LA BANCA :
  • JANICE IZABEL DRUZIAN
  • JÉSSICA HARTWIG DUARTE
  • MARCELO ANDRES UMSZA GUEZ
  • Data: 11-feb-2021


  • Resumen Espectáculo
  • The growing industrialization has caused changes in the environment, especially water resources, which has shown high concentrations of chemical compounds, coming from urban, agricultural and industrial activities, through the production of waste water. Currently, there are several types of industrial effluents, based on the numerous types of environmental contaminants and industries. Among these effluents, there is the water produced (AP), generated from the extraction of oil, it comes from the drilled well, therefore it has a complex composition containing organic and inorganic chemical compounds. Its production increases as the production of oil declines. oil and gas, therefore, for the extraction of crude oil it is necessary to increase the amount of water introduced. Among the treatments used to treat PA, the use of microalgae makes it possible to reduce environmental impacts, due to the bioremediation profile, in addition to producing biomolecules of commercial interest. The Chlorella genus has great biotechnological potential due to its metabolic profile, which is capable of producing large amounts of proteins, carotenoids (astaxanthin, lutein, β-carotene, violaxanthin and zeaxanthin), vitamins, minerals, antioxidants, polysaccharides, peptides and fatty acids . It is considered a promising source for the production of biofuels, known as the third generation. In this context, the objective of this study was to produce and characterize the Chlorella vulgaris biomass cultivated with daily supplementation of produced water (AP), aiming beyond the well-known bioremediation character of the microalgal species, to verify the production of biomolecules of commercial interest. Cultures were carried out in Erlenmeyer-type photobioreactors containing 1.5 L of BG11 medium, submitted to AP (daily supplementation with 50 mL of non-autoclaved water) and AD (daily supplementation with 50 mL of distilled water) treatment for 26 d. Biomass production was 4.87; 1.69 and 1.95 gL-1 in the control treatment, AP and AD, respectively. The values of µ specific and productivity for the Control, AD and AP, were respectively (0.24; 0.34 and 0.25 d- 1) and (0.03; 0.04 and 0.01 gL-1d-1). The biomass of the AP treatment had a higher carbohydrate content (40.19%), compared to the control (17.00%) and AD (22.50%). The values of chlorophyll a and b for AP ranged from 0.65 to 0.42μg / mL-1 and carotenoids 2.4 μg / mL-1, showing a significant difference (p <0.05) when compared to the Control (1.20 ( chlorophyll a), 0.80 (chlorophyll b) and 3.40 μg / mL-1 carotenoids), and AD (0.30 chlorophyll a; 0.20 chlorophyll b and 0.90 μg / mL-1 carotenoids). of AD lipids (24.08%) showed a significant difference (p <0.05) compared to AP (21.53%) and control (21.37%). The production of bioethanol in AP (18.22mL / 100g of biomass) was higher when compared to AD (10.20 mL / 100g of biomass) and to the control (7.70 mL / 100g of biomass). The fatty acid profile of AP was mostly composed of monounsaturated (48.52%), while AD (49.71%) and control (50.23%) saturated. AP showed a higher content of palmitoleic acid (5.42 mg.g-1); γ-linolenic (3.02mg.g-1) and linolelaidic (1.94 mg.g-1). As for the biodiesel properties, AP presented cetane number (49.22%) and iodine value (101.32g iodine / 100g) according to the norms. The levels of saponification 211.97 compared to 1st generation biofuels, only the plugging point, was slightly higher (22.48 ° C) than recommended by the legislation. In addition, a high removal efficiency of heavy metals such as Copper (Cu), Manganese (Mn), Molybdenum (Mo), Zinc (Zn) and Iron (Fe) which obtained removal efficiency of 70.00%, 76.89 %, 97.82%, 96.55% and 90.74% respectively, and 48.59% total hydrocarbon removal (HTP).Therefore, the microalgae Chlorella vulgaris is a promising alternative for bioremediation of chemical compounds in the water produced, generating biomass that can be used as a substrate for the production of biofuels, as shown in the AP treatment using wastewater from the oil industry.

4
  • BIANE OLIVEIRA PHILADELPHO
  • Antiproliferative activity of protein hydrolysates and fractions derived from soybean and cowpea beans proteins, on tumor cell lines.

  • Líder : EDERLAN DE SOUZA FERREIRA
  • MIEMBROS DE LA BANCA :
  • EDERLAN DE SOUZA FERREIRA
  • FERNANDO ROGÉRIO PAVAN
  • GUSTAVO GUADAGNUCCI FONTANARI
  • Data: 12-feb-2021


  • Resumen Espectáculo
  • Several studies have shown that peptides derived from proteins in legume grains have beneficial effects on human health. Among these, the antioxidant, antilipidemic, anti-glycemic and anti-obesity action stands out. In this sense, more recent studies have suggested that peptide fractions appear to modulate the cell proliferation of some tumor strains. In this sense, the present study evaluated the cytotoxicity (antiproliferative activity) of protein hydrolysates and peptide fractions from proteins isolated from soy (Glycine max) and cowpea (Vigna unguiculata), on tumor lines, in vitro. Proteins glycine (11S) and β-conglycinin (7S) from soybeans, and β-vignin (7S) from cowpea were isolated, through solubilization and precipitation steps at the isoelectric point, and afterwards, were partially purified by process chromatographic. Then, the proteins glycinin and β-conglycinin were hydrolyzed by the sequential action of the enzymes pepsin / pancreatin, and β-vignin by different enzymatic systems: i. pepsin, ii. trypsin, iii. pepsin / pancreatin, and iv. alkalase / pepsin. Subsequently, the cytotoxicity of the hydrolysates was evaluated. None of the hydrolysates had a cytotoxic effect on human non-tumor cells (HUVEC) at concentrations of 12.5–200 µg / mL. On the other hand, β-conglycinin and glycine protein hydrolysates inhibited the cell proliferation of human breast adenocarcinoma (MDA-MB-231), human hepatocellular carcinoma (Hep-G2) and prostate carcinoma (DU-145), between 24% 54%, and 20% to 45%, respectively. In addition, β-vignin protein hydrolysates, derived from the action of pepsin (IC50 = 3.71 µg / mL) and trypsin (IC50 = 3.02 µg / mL) exerted an anti-proliferative action of -95% and -91% , respectively, on the MDA-MB-231 strain. For soybeans, the fraction of peptides between 10-3 kDa of β-conglycinin showed a more significant antiproliferative effect on MDA-MB-231 (IC50 7.4 µg / mL) and DU-145 (IC50 6.0 µg / mL), while the fraction <3 kDa had a better effect against Hep-G2 cells (IC50 5.7 µg / mL), both with dose-dependent effect. In cowpea, the peptide fraction between 10-3 kDa had the best effect against MDA-MB-231 cells (IC50 = 0.62 µg / mL), while the peptide fraction of 30-10 kDa had the best effect inhibitory in Hep-G2 cells (IC50 = 10.63 µg / mL). The results observed in this study indicate the presence of peptides in the fraction between 10-3 kDa, derived from the protein β-conglycinin of soy and β-vignin of cowpea, with antiproliferative action on tumor cell lines, especially for breast adenocarcinoma. However, further studies are needed in order to identify the peptides that exert this effect, and to clarify the mechanism (s) involved in cell death. These issues are currently being studied by our research group.

5
  • ISABELLE PRYSCYLLA DA SILVA VIANA
  • Research of Salmonella spp. in milk and dairy products marketed in the State of Bahia and its relationship with foodborne diseases and consumer health

  • Líder : MARION PEREIRA DA COSTA
  • MIEMBROS DE LA BANCA :
  • CARLA PAULO VIEIRA
  • CARLOS PASQUALIN CAVALHEIRO
  • MARION PEREIRA DA COSTA
  • Data: 26-feb-2021


  • Resumen Espectáculo
  • Salmonella spp. it is one of the most widespread pathogens in nature, with man and animals being its main natural reservoirs, besides being considered as one of the main agents involved in food outbreaks worldwide. The incidence of this bacterium motivated by contaminated food shows that, today, despite the technological advances observed, this problem still occurs worldwide. Cattle are one of the main responsible for the dissemination of this pathogenic agent as well as the entire productive chain that involves the production and processing of its products. Certainly, milk and dairy products are among the main foods correlated with cases of foodborne diseases both in Brazil and in several other countries. Depending on the Salmonella serotype involved in the food outbreak, it can cause two main forms of the disease, such as salmonellosis and enteric fever. Both causing gastrointestinal disturbances with enteric fever being the most serious form of the infection. However, the occurrence of these diseases is still quite underreported, especially at the national level. The objective of this work was to prepare a study on the occurrence of Salmonella at the state, national and international levels. In addition to conducting microbiological analysis for Salmonella ssp. in 302 samples of milk and its derivatives sent to the Laboratory of Inspection and Technology of Milk and Derivatives of the Federal University of Bahia between the period of March 2019 to March 2020. These products come from several municipalities in the State of Bahia, Brazil. The ISO 6579: 2002 methodology applied to microbiological research on Salmonella spp. did not detect the presence of this pathogen in any of the samples analyzed in the study. Although, the study did not reveal the presence of Salmonella spp. in none of the dairy products analyzed in Bahia, the risk of ingesting these products should be considered, given the severity of the diseases caused by the bacteria in question. Some factors such as wide distribution of Salmonella spp. among animals, permanence in the environment and in food, as well as the existence of asymptomatic carriers in both animals and man, contribute for this microorganism to assume a role of great relevance in world public health, therefore, permanent control programs must be adopted.

6
  • Letícia Jambeiro Borges
  • Effect of luminosity on extracelular pigment production by Pseudofusicoccufm sp. and cytotoxity activity evaluation

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • MARCELO ANDRES UMSZA GUEZ
  • ANA LEONOR PARDO CAMPOS GODOY
  • SAMANTHA SERRA COSTA
  • Data: 16-abr-2021


  • Resumen Espectáculo
  •  

     

    The demand for safe natural products has increased over the years, which accelerated the food industry's enthusiasm for for the production of natural dyes in substitution to synthetics, making it possible to meet the demands of consumers. Therefore, the use of microorganisms as a source for obtaining pigments becomes a good alternative, requiring the development of studies that analyze the best conditions for production, with lower costs and greater yield. The light is a crucial environmental factor for regulating developmental and physiological processes in most organisms. The objective of this work was to evaluate the effect of luminosity (darkness and different color light) quality on biomass and extracellular pigment yield of Pseudofusicoccum sp. in submerged fermentation and to verify the in vitro cytotoxicity of the submerged extract in tumor and normal cell lines. The growth of Pseudofusicoccum sp. was statistically not affected by the incubation under different wavelengths of light. Pigment production has increased according to the color of light, white<blue<green<red<darkness<yellow. Extracellular pigment production resulted maximum in yellow light and total darkness (maximum absorbance value of 3.56 and 3.03 respectively) and the opposite was observed in unscreened white light (maximum absorbance value of 0.06). The pigment extract is not cytotoxic against cells lines tested (HepG2, SCC4, BJ and MRC-5), showing potential for use in food industry.

7
  • RAFAELA BARBOSA LIMA DOS SANTOS
  • ENRICHED COOKIE WITH WHITE CABBAGE EXTERNAL LEAF FLOUR (Brassica oleracea var. Capitata) AND Spirulina sp .: DEVELOPMENT AND CHARACTERIZATION

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • DEBORAH MUROWANIECKI OTERO
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 18-jun-2021


  • Resumen Espectáculo
  • The present work aimed to evaluate the use of flour from the outer leaf of cabbage (CF)
    and biomass of Spirulina sp. (BS) to reduce food waste and improve the functional
    properties of cookies. Five formulations were produced, one control (CC) and the others
    enriched with 0.5% of BS and RR in different percentages in relation to the weight of
    wheat flour, being 5% (CBR5), 10% (CBR10), 15% (CBR15) and 20% (CBR20). The
    physicochemical analyses, color, total carotenoids, antioxidant and mineral activity of
    RR, BS and enriched cookies were investigated. The incorporation of raw materials in
    enriched cookies, when compared to CC, promoted a significant increase in the
    following indicators: humidity (7.00 to 9.08%), proteins (5.42 to 6.35%), ash (1.81 to
    2.45%), fiber (0.94 to 3.63%), carot total pre-cooking (6.74 to 12.20 μg.g-1) and postcooking
    (5.29 to 12.36 μg.g-1), pre-cooking antioxidant activity (5.29 to 12.36 μg.g-1),
    pre-cooking antioxidant activity (5.29 to 12.36 μg.g-1), pre-cooking antioxidant activity
    (1841.00 to 8003.25 μM DPPH Trolox.g-¹ and 164.00 to 4034.67 μM ABTS Trolox.g-¹)
    and ABTS powders -coction (6618.00 to 11769.00 μM DPPH Trolox.g-¹ and 417.33 to
    6592.00 μM Trolox.g-¹ ABTS); and minerals such as Magnesium (5.33 to 7.77
    mg.100g-1) and Calcium (4.64 to 11.67 mg.100g-1). The increase in BS and RF, in
    their different proportions, resulted in an improvement in the nutritional contribution of
    cookies, especially at the highest concentrations of RF. It is concluded that FR and BS,
    which associates the use of vegetable raw material rich in fibers and microalgae
    biomass, a source of protein, can be incorporated into products such as cookies. This
    strategy, in addition to reducing food waste, contributes to improving the nutritional
    profile and bioactive compounds.

8
  • TALITA ANDRADE DA ANUNCIAÇÃO
  • Comparative analysis of kefir and kombucha with probiotic and functional potential: innovation, health and market

  • Líder : KARINA TEIXEIRA MAGALHAES GUEDES
  • MIEMBROS DE LA BANCA :
  • CÍNTIA LACERDA RAMOS
  • GILBERTO VINÍCIUS DE MELO PEREIRA
  • KARINA TEIXEIRA MAGALHAES GUEDES
  • Data: 01-sep-2021


  • Resumen Espectáculo
  • There is a growing concern among people to improve and readjust eating habits. However, the need to maintain a fast and practical lifestyle in big cities makes people look for foods that can nourish and bring health benefits without demanding high cost and prolonged time. Functional beverages are becoming increasingly attractive in this context. Kefir and kombucha are beverages with functional and probiotic potential that provide great benefits to human health. Kefir is a beverage originating in the Caucasus produced from kefir grains fermentation in sugar water and/or milk. Kefir grains are a symbiotic colony of lactic acid bacteria, acetic acid bacteria and yeasts. Kombucha is a beverage of Chinese origin obtained from the fermentation of scoby (symbiotic culture of bacteria and yeast) in tea obtained exclusively from Camelia sinensis. Thus, the aim of this study was to carry out a scientific comparison on the functional, health, innovation and consumption aspects of kefir and kombucha, analyzing aspects of the scientific literature, patent prospecting and questionnaire. It was possible to observe that, although both beverages have a beneficial role to human health, kefir has a greater prominence in terms of patents and in published scientific articles. In the Brazilian market, yogurts are more consumed compared to kefir and kombucha, however these are also gaining prominence in the national market. Finally, we emphasize that although kefir and kombucha are ancient foods, these beverages are still little explored for scientific innovation and functional aspects. However, the academic and community use of kefir and kombucha for the various functional potentials show growth prospects for the coming years.

9
  • THAÍS DE SOUZA SANTOS
  • Alternative biosynthesis of xanthan gum in petroleum industry wastewater and cassava waste: production and characterization
  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • DENILSON DE JESUS ASSIS
  • GLEICE VALERIA PACHECO GOMES
  • Data: 22-sep-2021


  • Resumen Espectáculo
  • Xanthan gum is a microbial exopolysaccharide that has wide industrial application due to desirable properties such as high viscosity, water solubility, emulsion stabilization and gel formation. In recent years, studies have sought to evaluate the production of xanthan gum from the use of different agro-industrial residues, in order to reduce costs and add value to the products. Thus, this work aimed to evaluate the production of xanthan gum in wastewater from the petrochemical industry supplemented with cassava processing waste, as well as to characterize the biopolymers obtained. Initially, the physicochemical and metal composition of wastewater from the petrochemical industry (produced water) and the proximate composition (moisture, protein, lipids, carbohydrates and ash) of the cassava processing waste were evaluated. The production was carried out in a shaker at 180 rpm, 30 °C, during 72-96h of fermentation, with 50 mL of produced water and cassava residue (2% m/v) being incorporated into the fermentation medium. The gums obtained were characterized for rheology (apparent viscosity), emulsification index, infrared spectroscopy (FTIR) and thermal stability (TGA/dTGA). The maximum production was obtained in 72 hours of fermentation (6.80 g L-1), the results show that there was no significant difference between the evaluated times (p ≤ 0.05). The viscosities obtained for the gums were 11.07 and 10.11 mPa⋅s, (72 and 96h respectively) at 25°C and 25s-1 and as the shear rate increased (1000s-1), the values of viscosity reduced (2.44 and 2.30 mPa⋅s for 72 and 96h respectively), confirming its pseudoplastic characteristic. The emulsification index for the gums of both times was equal to or greater than 50%, being considered a good emulsifying agent. The FTIR results showed that the gums obtained at different times of fermentation showed a similar spectral behavior. The samples showed four thermal events characteristic of xanthan gum and good thermal stability when compared to commercial gum. Given this, the results show the possibility of producing xanathan gum, amid produced water and cassava residue.

10
  • JAMILA SUEIRA DE JESUS SILVA
  • MANIPULATION OF Chlorella vulgaris CULTIVATED IN WASTEWATER FROM OIL INDUSTRY: PRODUCTION OF BIOMASS AND BIOMOLECULES

  • Líder : JANICE IZABEL DRUZIAN
  • MIEMBROS DE LA BANCA :
  • ICARO THIAGO ANDRADE MOREIRA
  • JANICE IZABEL DRUZIAN
  • JÉSSICA HARTWIG DUARTE
  • LUCAS GUIMARÃES CARDOSO
  • Data: 05-nov-2021


  • Resumen Espectáculo
  • Produced water (AP) is the effluent resulting from the injection of seawater into wells for oil extraction. It is a wastewater with a significant environmental impact, due to its high salinity, presence of chemical compounds, and growing demand for fossil fuels. The microalgae have been considered promising to phytoremediation this effluent, reducing the impact caused and producing biomass with high added value. Given the above, the objective of this study was to increase the production of biomass and biomolecules of the microalgae Chlorella vulgaris cultivated in produced water, through the synergistic effect of two sources physical and chemical stress. The microalgae were cultivated in different concentrations of AP (not autoclaved) and BG11 (0, 30, 40, and 50%), under a 24-hour photoperiod, with an inoculum pre-adapted to the same photoperiod. Among the treatments, the culture containing 70% of BG and 30% of AP (AP30%), showed viability with biomass production of 1.35 gL-1 . The biomass obtained in AP30% showed a higher concentration of carbohydrates (37.46%) and ash (18.21%) than the control. In addition to relevant levels of lipids (9.92%), proteins (21.94%) and pigments such as chlorophyll a (6.64 μg mL-1 ), chlorophyll b (10.57 μg mL-1 ), and carotenoids (21.38 µg mL-1 ). The fatty acid profile presented as major acids C18:3n6 (21.50%), C20:0 (19.96%), C16:0 (17.12%), and C18:0 (12.15%), this accounted for approximately 70% of the total. As for biofuels, the diversity of fatty acids presented an ideal profile for the production of biodiesel, in addition to bioethanol (17.02 mL 100g-1 ) which can be obtained from carbohydrates. Therefore, the adaptation of the inoculum to the 24-hour photoperiod acted synergistically with AP, favoring the final production of biomass and the synthesis of biomolecules by the microalgae.

11
  • GEISIANE DOS SANTOS SILVA
  • Bioaccessibility in vitro of bioactive amines in dark chocolates made with different proportion of under-fermented cocoa bens

  • Líder : ELIETE DA SILVA BISPO
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • ALESSANDRA SANTOS LOPES
  • Bruno Martins Dala Paula
  • Data: 03-dic-2021


  • Resumen Espectáculo
  • The health and well-being of the human being has been the focus of much research in the food area, due to the population's tendency to search for healthier foods and products. Chocolate, as well as products derived from cocoa (Theobroma cacao L.) processing, are widely consumed and appreciated in many countries and cultures due to their hedonic value and the presence of functional constituents with beneficial effects on human health, such as the various bioactive compounds among them the polyphenols that are widely studied and other groups of bioactives, still little explored such as amines. Amines are organic bases of low molecular weight that have biological activity and can be found naturally in foods, formed from the decarboxylase action of micro-organisms during processing, especially in the steps where there is fermentation, in storage as a product of microbiological contamination or during digestion by the intestinal microbiota. Considering the possible changes in the levels of amines in cocoa beans during fermentation, the need to produce high quality chocolates, and the scarce studies on bioaccessibility of amines in chocolate, the objective of this study was to investigate the influence of under-fermented – UF (48h) cocoa (0-65%) on bioactive amines in chocolate and their in vitro bioaccessibility. The same eight amines were found in two groups regarding total contests [A-0 & 20% UF (34 mg/kg) and B-35 to 65% UF (17 mg/kg)]. Low levels of amines were present in the oral phase, representing free amines. Gastric digestion was effective in releasing tyramine, serotonin and agmatine (A), 24 spermidine (A) and phenylethylamine from conjugates. Intestinal digestion was efficient in releasing putrescine, cadaverine, histamine and spermidine (B). Tyramine and phenylethylamine showed highest bioaccessibility, which was not affected by the addition of UF cocoa. Agmatine and serotonin had lowest bioaccessibility, and were present only in A. By adding different proportions of UF cocoa during chocolate production, the levels and bioaccessibility of amines can be modulated as well as their binding to conjugates.

12
  • ANDRÉA REBOUÇAS ROCHA
  • Occurrence of aflatoxins B1, B2, G1 and G2 in beers produced in Brazil and their carcinogenic risk assessment
  • Líder : JOSE ANTONIO MENEZES FILHO
  • MIEMBROS DE LA BANCA :
  • JOSE ANTONIO MENEZES FILHO
  • ALINE CAMARÃO TELLES BIASOTO
  • KARIM CRISTINA PIACENTINI
  • Data: 10-dic-2021


  • Resumen Espectáculo
  • Introduction: Aflatoxins (AFs) are secondary metabolites produced by filamentous fungi that contaminate various cereals. Such contamination affects beer ingredients and adjuncts used in its processing. Due to AFs high thermostability, they can be transferred from raw material to beer. Exposure to aflatoxins is thus of great concern, as these contaminants have high toxic potential and carcinogenic, teratogenic, and mutagenic effects. Since beer is the most consumed alcoholic beverage in Brazil, the assessment of aflatoxins occurrence and carcinogenic risk arising from such exposure are of paramount importance.

    The first chapter of this study presents a literature review on the occurrence of aflatoxins in beer, their transfer from raw material to the beverage, and the methods used for their identification and quantification. The second chapter presents the results of the research on these contaminants in beer, involving the validation of the analytical method, application of the analytical technique to beer samples produced and commercialized in Brazil, and the assessment of carcinogenic risk.

    Objectives: The objectives of this study were: (i) to evaluate the occurrence of aflatoxins B1, B2, G1, and G2 in beers, with and without adjuncts, commercialized in Brazil, and (ii) to carry out the carcinogenic risk assessment arising from the exposure to aflatoxins through consumption of those beers.

    Method: Sixty beer samples (30 with adjunct and 30 without adjunct) of the leading industrial brands produced and commercialized in Brazil were analyzed. An analytical method by HPLC with fluorescence detection was standardized. Aflatoxin extraction and purification were performed on immunoaffinity columns. The limit of quantification (LQ) ranged from 10 ng.L-1 to 30 ng.L-1, and the mean recoveries were 88.5%, 98.0%, 98.3%, and 110.1% for AFB1, AFB2, AFG1, and AFG2, respectively. The standardized method showed selectivity, specificity, precision, and accuracy, meeting the requirements established by INMETRO guidelines. The risk assessment was performed by determining the margin of exposure (MOE) in two scenarios: medium consumption and high consumption, for men and women.

    Results and discussion: Of the total beer samples (n=60), 88.3% showed the occurrence of at least one of the AFs. The median levels of AFB1, AFG1, and AFG2 were lower than the LD/LQ. AFB2 had a higher incidence in the analyzed samples than other aflatoxins. There was a significant difference between the content of AFB2 in the beer groups with and without adjuncts (p=0.003). The median levels of AFB2 contents were 27.0 and 40.4 ng.L-1 for the beer group with and without adjunct, respectively. Contrary to our results, previous studies carried out in other countries suggested that the use of adjuncts may contribute to the occurrence of aflatoxins in beer. Furthermore, we identified that, in addition to the need of assessment of the occurrence of aflatoxins in brewing adjuncts, this test should be carried out on barley malt used for beer production in Brazil.

     Regarding the risk assessment, MOE values corresponding to high beer consumption (> 160 mL/day) were 5,303 for beer with adjunct and 3,643 for beer without adjunct. The risk characterization showed that people who drink more than 1.1 L per week might be exposed to carcinogenic effects from AFB2. The risk is higher for the consumption of beer without an adjunct. These data can thus help the authorities to establish maximum tolerated limits for aflatoxins in beer.

13
  • EMILY ARAÚJO PORTO PEREIRA
  • ACTIVE SODIUM ALGINATE FILMS CONTAINING BURITI OIL FOR APPLICATION IN HAMBURGER
  • Líder : RONALDO LOPES OLIVEIRA
  • MIEMBROS DE LA BANCA :
  • RONALDO LOPES OLIVEIRA
  • THADEU MARINIELLO SILVA
  • ANDRE LEANDRO DA SILVA
  • Data: 13-dic-2021


  • Resumen Espectáculo
  • Packaging is currently produced from petroleum-derived polymeric materials and is not recyclable, ie, low biodegradability, which has led to environmental problems. With this, the need to develop biodegradable packaging and the concern for the correct conservation of food with safety and quality has grown. Sodium alginate is a biopolymer produced by plant and microbial organisms used in the food industry as an emulsifier, chelator and to form films. Buriti oil from the pulp of the fruit (Mauritia flexuosa), found in the Amazon and Cerrado, has antioxidant, plasticizer, photoprotective and antimicrobial properties, which associated with alginate can enhance the active film effect. In the first chapter, a bibliographical review addressing the aspects that involve the films and their properties. In chapter two, the objective was to develop and characterize sodium alginate films incorporated into buriti oil for hamburger conservation in storage, replacing traditional packaging. The films were produced using the “casting” technique with a filmogenic solution of sodium alginate and concentrations of 0; 0.5; 1.0; 1.5% of buriti oil. Films were characterized by thickness, mechanical, thermal and toxicity properties. The 0.5% film had properties closer to those desirable in the industry. For a second study, hamburgers were produced in the laboratory and stored under refrigeration (4 °C) in three treatments, A: Without film; B: Alginate film; C: Film with 0.5% buriti oil at times 0, 3, 6 and 9 days. The variables analyzed were chemical composition, water retention capacity, pH, color, texture, iron content and microbiological analyzes that demonstrated a reduction and/or maintenance of pH, reduction of water loss in storage and cooking, color maintenance , texture and decreased microbiological count compared to the control. The development of sodium alginate films incorporated into buriti oil for hamburger preservation proved to be promising for the food industry.

2020
Disertaciones
1
  • JANAÍNA DE CARVALHO ALVES
  • SENSORY QUALITY OF COCOA NIBS FROM BAHIA AND ESPÍRITO SANTO

  • Líder : SERGIO EDUARDO SOARES
  • MIEMBROS DE LA BANCA :
  • SERGIO EDUARDO SOARES
  • ELIETE DA SILVA BISPO
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • ADRIANA CRISTINA REIS FERREIRA
  • LEONARDO FONSECA MACIEL
  • Data: 24-ene-2020


  • Resumen Espectáculo
  • In the world market there are two categories of cocoa: fine and common cocoa beans, also called Bulk. Fine cocoa almonds have a delicate aroma and taste, bringing rare sensory notes such as fruity, floral, herbs, woody, walnuts and caramelized, as well as rich and balanced chocolate bases. Thus, considering the high consumption and immense appreciation of cocoa products and their consumers, this study evaluated the sensory quality of 37 cocoa varieties from 16 municipalities of the state of Bahia and Espirito Santo through check-all-tests (CATA) and acceptance, as well as select samples with potential for fine cocoa. The 37 samples were submitted to the CATA questionnaire containing 19 descriptive terms and to the affective test through a 9-point hedonic scale, with the participation of 106 consumers. Samples (at 40ºC) were offered in disposable containers with a lid, using an incomplete block design and at random. CATA results were evaluated by non-parametric Cochran's Q test at 5% significance level and correspondence analysis (CA). Acceptance test data were submitted to analysis of variance (ANOVA) and Tukey's means test also at 5% significance level. A multiple factor analysis was used to investigate the relationship between terms that presented frequency of mentions above 20% in the CATA questionnaire, global acceptance, municipality of origin, harvest time, pH and fermentation and subfermentation index of the samples. In addition, a Hierarchical Group Analysis (HCA) was performed using Euclidean distances (dissimilarity), Ward's method (clustering) and automatic truncation. These procedures were supported by the XLSTAT® 2019 statistical program. The Cochran Q test revealed that consumers identified a significant difference (p <0.005) between the samples in 16 descriptive terms listed in the CATA questionnaire. The descriptors floral aroma, roasted aroma and buttery flavor showed no significant difference, while the terms bitter taste, chocolate / cocoa aroma and roasted flavor presented the highest percentage of mentions. The terms fruity and acidic aromas presented a negative correlation with the terms woody, nuts / oilseeds, buttery, cocoa and sweet. Through the Principal Component Analysis it was observed that the terms descriptors sweet taste, cocoa taste, nuts / oilseed taste, fruity taste, chocolate flavor, sweet flavor presented negative correlation with the attributes acid flavor, roasted flavor, woody flavor, bitter taste, acidic and astringent taste. Thus, it can be inferred that the tasters were able to distinguish a variation between the samples studied. The attributes sweet taste and cocoa / chocolate flavor represented the descriptors with the greatest positive effect on the preference averages, while the
    astringency, acid taste and bitter properties implied lower acceptance scores by this group of consumers under study. The results of the global acceptance test revealed that there was a significant difference between the samples. The averages ranged from 6.05 (corresponding to the hedonic term “slightly liked”) to 4.46 (“slightly disliked”). In the multiple factor analysis there was a negative correlation between the acid taste and astringency variables with the pH variable. It was concluded that the CATA test, as well as the descriptors used were adequate to describe the sensory quality of the evaluated cocoa nibs. Participants were able to differentiate the samples according to their sensory characteristics, thus suggesting that the cocoa samples Jaguaquara / 28, Itacaré / 26, Porto Seguro / 32, Ilhéus / 11, Ilhéus / 4, Uruçuca / 35, Belmonte / 17 , Ibicaraí / 21, Aracruz / 1, Apuarema / 12, Arataca / 15, Ilhéus / 10, Uruçuca / 36, Camacan / 18, Marau / 30 for having been associated with characteristic notes of fine cocoa (sweet taste, cocoa / chocolate flavor , nut / oil flavor, fruity flavor, chocolate flavor, sweet flavor) have the highest potential for this classification. This opens a perspective for the implementation of the designation of origin for this region. However, for this, it is necessary to carry out further in-depth studies and according to the appropriate protocols for this specific purpose.

2
  • JOSEVANIA DA CONCEICAO DOS SANTOS
  • EVALUATION OF THE NUTRITIONAL AND FUNCTIONAL POTENTIAL OF EDIBLE INSECTS: AN INNOVATIVE ALTERNATIVE FOR THE FOOD SECTOR

  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • ADRIANA LUCIA DA COSTA SOUZA
  • CAROLINA OLIVEIRA DE SOUZA
  • DENILSON DE JESUS ASSIS
  • JANICE IZABEL DRUZIAN
  • LUCAS GUIMARÃES CARDOSO
  • Data: 14-feb-2020


  • Resumen Espectáculo
  • Worldwide, there is a growing need to seek alternative sources of food in addition to those traditionally used. This demand has led to considerable interest in edible insects, which are already part of the cultures and diets of many countries, in addition to representing an excellent sustainable source of essential nutrients. The consumption of insects as food is practiced in several regions, and in Brazil more than 130 species of edible insects belonging to nine orders have already been registered, among which are the Hymenoptera and Coleoptera. Of this order, the highlights are Atta sexdens (ant) and Pachymerus nucleorum (coconut larva). Given the above, the objective of this work was to characterize two species of edible insects (Atta sexdens and Pachymerus nucleorum) traditionally consumed in Brazil, in order to know their nutritional potentials for insertion as an alternative food in the human diet. For this, the insects were evaluated on a wet basis (in natura), as well as through the preparation of whole and defatted flours. Physical-chemical analyzes (moisture, proteins, lipids, ash, crude fiber, water activity and fatty acid profile), antioxidants (phenolic compounds, flavonoids and DPPH) and microbiological (Coliforms at 35 ° C and 45 ° C, Molds and Yeast, Mesophiles, Salmonella sp. and Escherichia coli). The results showed that proteins (39.01% and 26.14%) and lipids (28.20% and 52.19%) were the major components, followed by fibers (23.57% and 14.51%) for A. sexdens and P. nucleorum respectively. In addition, the insects showed high percentages of unsaturated fatty acids (A. sexdens - 76.12% and P. nucleorum - 47.23%), with emphasis on the essential fatty acid C18: 2n-6 (A. sexdens - 61, 46% and P. nucleorum - 7.19%), which was higher than that of beef in both species. P. nucleorum larvae had a high content of phenolic compounds (836.39 mg GAE / 100 g) and antioxidant activity (44.33%), with values higher than those of traditional fruits. The effects show that the species analyzed can be considered viable as an alternative source of food, as they have potential nutritional value, and should therefore be exploited as a natural and renewable resource for human consumption.

     

3
  • MADIAN JOHEL GALO SALGADO
  • DETERMINATION OF THE PROFILE OF FATTY ACIDS IN ASIN MILK AND ITS USE IN THE DEVELOPMENT OF YOGHURT WITH FUNCTIONAL PROPERTIES

  • Líder : RONALDO LOPES OLIVEIRA
  • MIEMBROS DE LA BANCA :
  • RONALDO LOPES OLIVEIRA
  • CLAUDIO VAZ DI MAMBRO RIBEIRO
  • JOSE ESLER DE FREITAS JUNIOR
  • CHIARA ALBANO DE ARAUJO OLIVEIRA
  • DEBORAH MUROWANIECKI OTERO
  • ADRIANO HENRIQUE DO NASCIMENTO RANGEL
  • Data: 09-mar-2020


  • Resumen Espectáculo
  • The aim of the study was to evaluate how lactation days affect the fatty acid profile (AGs) of donkey milk raised on pasture, and to evaluate the effect of different thickeners on rheological properties and acceptance of donkey milk based yogurts in comparison to bovine milk yogurts. Milk from Pêga donkeys kept on pasture was used. For the analysis of AGs, donkey milk samples were composed according to the average lactation days at: 55, 110, 165, 220 and 275 days of lactation. The linear and quadratic effects of lactation days on the milk GA profile were tested. Six products were developed for the development of yoghurts formulated with xanta gum and with the addition of inulin, apple fiber and passion fruit fiber, using donkey and bovine milk. Moisture, ash, fat and protein, pH, color, rheological parameters and lactic acid bacteria (BALs) were analyzed. Passion fruit fiber was the thickener selected for use in sensory analysis products with four treatments (two with donkey milk and two with cow's milk, control and passion fruit fiber). The data of the proximate composition were analyzed in a completely randomized design, the data of pH, BAL count, rheological properties and color were analyzed in mixed models with fixed effects and storage time, and the data of the sensorial analysis were analyzed in a block design. complete at random. The majority of AGs did not change during the lactation days, but the stearic and oleic acids decreased linearly. The total levels of polyunsaturated FAs (PUFA) and of n-3 FAs increased with the days of lactation. The AG profile of donkey milk fed on forage is influenced by the days of lactation and is characterized by high concentrations of PUFA, mainly of α-linolenic and linoleic acids. Among the formulations there was a significant difference in moisture, protein and fat content. The physical-chemical and rheological characteristics of yogurts increased with the addition of thickeners. The passion fruit fiber provided greater viscosity. In the attributes of odor, flavor, acidity, consistency and mouthfeel, there was greater acceptance of yogurts without the addition of passion fruit fiber. The last lactation period may be the most favorable for the consumption of donkey milk fed exclusively on pasture. The rheological properties, proximate composition and physico-chemical characteristics were influenced by the thickener, especially the passion fruit fiber. However, the passion fruit fiber had an impact on the acceptance of yogurts.

4
  • Karina Lizzeth Pedraza Galvan
  • DEVELOPMENT OF PBAT FILMS INCORPORATED WITH BIXIN AND CITRIC ACID: PROPERTIES AND ACTIVE ACTION

  • Líder : JANICE IZABEL DRUZIAN
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • JANICE IZABEL DRUZIAN
  • MARION PEREIRA DA COSTA
  • DENILSON DE JESUS ASSIS
  • JANIA BETANIA ALVES DA SILVA
  • Data: 31-mar-2020


  • Resumen Espectáculo
  • It is estimated that by 2040 synthetic polymers will disappear from different production chains due to the irreversible damage of the disposal to the environment. As a contribution to this new perspective, the use of biopolymers is increasingly promoted, associated with the development of active packaging that reduce the development of microorganisms and chemical reactions of the packaged product. Therefore, the aim of this study was to develop by casting, active films of the poly (butylene adipate co-terephthalate) (PBAT) and different concentrations of bixin and citric acid. Eleven active films were developed by a Central Composite Rotational Delineation (CCCD) and characterized in terms of the dependent variables: physical, chemical and mechanical properties, in addition to barrier and antioxidant and antimicrobial efficacy. The films showed homogeneity, thermal stability greater than 200 ° C, and reduced water vapor permeability by up to 10 times when compared to the PBAT control film (8.589 ± 0.689 g.mm / Kpahm2). All films containing the additives showed a representative decrease in tensile strength and elongation at break. Formulation 8 with intermediate concentrations of bixin (0.30%) and maximum citric acid (1.19%) inhibited the development of pathogenic bacteria Salmonella, Bacillus cereus, Staphylococcus aureus and mainly Listeria monocytogenes (P <0.05) and presented the highest percentage of free radical scavenging (DPPH). The films presented colors with different intensities depending on the concentration of bixin, some of which can be used as packaging for certain food matrices subject to oxidation and sensitive to the development of pathogenic microorganisms. The mechanical and color parameters, in addition to water vapor permeability and antioxidant action, underwent significant changes in at least one of the additives incorporated in the PBAT matrix. These results support the applicability of bixin and citric acid in PBAT films with potential for use as packaging materials, contributing to food safety and environmental sustainability.

5
  • BIANCA VILAS BOAS ALVES
  • Physicochemical stability of pigment produced by Pseudofusicoccum sp.

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • MARCELO ANDRES UMSZA GUEZ
  • SAMANTHA SERRA COSTA
  • Data: 30-jul-2020


  • Resumen Espectáculo
  • The change in consumer habits, with a search for natural food consumption, led companies to adapt. The substitution of synthetic colors by natural ones, in all segments of the industry has been occurring, mainly due to health and environmental issues. However, there are limitations in the use of natural sources such as plants and animals. The use of fungi for the production of natural dyes has been an option, due to the potential to produce large amounts of pigments in small spaces and at lower costs. The objective was to evaluate the physical-chemical stability of the pigment produced by the fungus Pseudofusicoccum sp., endophytic from Manilkara salzmannii, collected in the Restinga area of Salvador. The fungus was grown for 24 days in Sabouraud medium, and the extract containing the pigment, obtained by vacuum filtration, was used to perform the stability tests. The extract was subjected for 24h to variations in pH (3 to 10), temperature (30 to 90 ° C) and to the effect of food additives and ions. In addition, the pigment extract was stored under the effect of light at 4 ° C, freezing (- 20 ° C) and refrigerator (4 ° C) for 90 days. The samples were evaluated in a spectrophotometer at 520nm and in a colorimeter. With the data found, the pigment extract showed no significant difference in pH from 3 to 6, showing its greater stability in an acid medium when compared to an alkaline medium, which showed a color conservation of 78, 68 and 60% after 24h for the pH 8, 9 and 10. The use of high temperatures affected stability more, with a residual red color of 36, 31 and 29%, at temperatures of 70, 80 and 90ºC at the end of 24h. In light storage, the red pigment of the extract was degraded by 87% at the end of the experiment. In the colorimeter, the same behavior was observed in all conditions that occurred with the degradation of the red color of the pigment, however, with the decrease in the value of a * (showing the degradation of red), there was an increase in the value of b * (increase in color Yellow). From these results, the best conditions for growing the fungus, obtaining and preserving the pigment can be applied, considering the potential of using this pigment as a stable natural colorant for food.

6
  • MARGARIDA LINS DA CRUZ
  • Study of the influence of the mixture of cocoa nibs with different fermentation levels on the contents of bioactive compounds and on the antioxidant activity of the chocolate composition

  • Líder : ELIETE DA SILVA BISPO
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • LEONARDO FONSECA MACIEL
  • SERGIO EDUARDO SOARES
  • Data: 14-ago-2020


  • Resumen Espectáculo
  • The demand for health-promoting foods has grown in many parts of the world, and a large body of evidence supports food intake of phenolic compounds, particularly flavonoids that can be widely found in cocoa beans, the main raw material for chocolate, which can contribute to the prevention of chronic diseases. The objective of this study was to verify the influence of the addition of subfermented cocoa bean nibs in relation to the content of bioactive compounds and antioxidant properties in the chocolates produced. Subfermented and fermented cocoa beans, nibs and chocolates were evaluated for their physical-chemical composition, by analyzing moisture, ash, proteins and lipids, cut test, fermentation index, phenolic compounds, flavonoids, anthocyanins, identification and quantification of phenolic compounds, methylxanthines and antioxidant activity. The determinations were made in triplicate and the tests used were the T Test and the Tukey Test (P <0.05), the results being submitted to Analysis of Variance (ANOVA). The results showed that the physical-chemical composition was different between cocoa beans and chocolates. A variation of bioactive compounds was observed, with higher concentrations found in assays with higher proportions of subfermented almonds. The quantification of bioactive compounds identified theobromine as the main component and the methods of antioxidant activities correlated perfectly with the results of monomeric bioactive compounds. For this reason, this study proved that the use of subfermented cocoa beans in the production of chocolates favored the increase in bioactive compounds, enabling the increase in the functional potential of the chocolates produced.

7
  • RAFAEL SEPÚLVEDA FONSÊCA TREVISAN PASSOS
  • Effects of green tea (Camellia sinensis) extract on chicken burger quality parameters

  • Líder : CARLOS PASQUALIN CAVALHEIRO
  • MIEMBROS DE LA BANCA :
  • ANA PAULA BURIN FRUET
  • CARLOS PASQUALIN CAVALHEIRO
  • MARIANA NOUGALLI ROSELINO
  • Data: 19-ago-2020


  • Resumen Espectáculo
  • The effects of green tea extract addition on quality parameters of chicken burgers during storage for 10 days at 4°C were evaluated. Total phenolic content, total flavonoids content and antioxidant capacity through DPPH assay were performed on extracts before application on meat products. Then, chicken burgers were made and 0.5% and 1.0% green tea extract were applied to their formulations. Analyzes of cooking yield, proximate composition, lipid oxidation, pH, instrumental color, texture parameters, microbiological parameters and sensory analysis were also performed. The results showed in vitro antioxidant capacity of the extract used in this study, and did not change the proximate composition of the chicken burgers (P > 0.05). It was also observed that green tea extract application reduced the lipid oxidation in both concentrations (0.05% and 1.0%) (P < 0.05), and the pH values were lower than 6, which is indicated for this kind of meat product. The addition of green tea extract affected redness values of burgers, reduced hardness and chewiness parameters and increased cohesiveness parameter (P < 0.05) in the treatment with 1.0% green tea extract addition. However, no antibacterial effect was observed in chicken burgers during storage time. Chicken burgers with green tea extract addition were well evaluated on sensory analysis. Regarding acceptability index, treatments with addition of tea extract had values higher than 70 %. Thus, within the experimental conditions of this study, green tea extract represents a good natural alternative for preserving meat products.

8
  • ANA PAULA AZEVÊDO MACÊDO
  • EFFECT OF REGULAR GREEN TEA CONSUMPTION ON METABOLIC CHANGES INDUCED BY A HYPERLIPID DIET IN MICE

  • Líder : RICARDO DAVID COUTO
  • MIEMBROS DE LA BANCA :
  • JAILANE DE SOUZA AQUINO
  • KARINA TEIXEIRA MAGALHAES GUEDES
  • RICARDO DAVID COUTO
  • Data: 20-ago-2020


  • Resumen Espectáculo
  • Obesity is a complex disorder associated with adverse health consequences, including dyslipidemia, high blood pressure, type 2 diabetes, and non-alcoholic liver steatosis. As this disease is increasing, more and more alternative treatments such as herbal medicines are being sought, due to the low cost and easy access, mainly through the consumption of teas. The objective of this study was to evaluate the effect of a green tea (Camellia sinensis) infusion regular consumption on metabolic changes in mice and the use of a high-fat diet. The C57 / BL6 mice were segregated into four groups: control diet plus autoclaved water or green tea and high-fat diet plus autoclaved water or green tea for 16 weeks. Weight and waist circumference were measured every two weeks and blood glucose was measured every four weeks of experience. Oral glucose and insulin tolerance tests were performed in the last week. In the sixteenth week, after the animal was euthanized, the adipose tissue was dissected and weighed. The consumption of green tea in mice fed a high-fat diet promoted a weight reduction in the sixth and sixteenth weeks (p <0.01), a significant reduction in waist circumference in the fourth week (p <0.05) and continuously from the eighth week (p <0.05; p <0.01). The infusion of green tea reduced the deposition of adipose tissue in all analyzed compartments (p <0.001), including brown adipose tissue (p <0.01). Fasting blood glucose showed a significant reduction only in the sixteenth week (p <0.05) and the peak of blood glucose in the 15-minute time of the oral glucose tolerance test (p <0.01) showed a significant reduction for the high-fat group that consumed green tea. In conclusion, green tea promoted a reduction in weight and waist circumference, as well as the deposition of adipose tissue in all compartments analyzed in C57/BL6 mice submitted to the consumption of a high-fat diet

9
  • MARIANE DOS SANTOS GONCALVES
  • Therapeutic effect of the green tea on liver changes resulting from consumption of a high-fat diet

  • Líder : RICARDO DAVID COUTO
  • MIEMBROS DE LA BANCA :
  • EDERLAN DE SOUZA FERREIRA
  • RICARDO DAVID COUTO
  • THAÍS SOUZA PASSOS
  • Data: 24-ago-2020


  • Resumen Espectáculo
  • Food choices are directly related to the population health. The increase in the consumption of calories and saturated fats, together with the low consumption of fruits and vegetables, favors the emergence of obesity and numerous diseases related to it, such as, for example, Non-Alcoholic Fatty Liver Disease (NAFLD). Therefore, new strategies must be analyzed to treat this disease. Green tea is rich in caffeine and catechins, and because of that its therapeutic properties have been investigated. The study aims is to evaluate the effect of the green tea infusion on the metabolic and hepatic modifications of mice fed a high-fat diet. Male C57BL/6 mice, aged forty to sixty days, were randomly allocated into 4 groups: control (C), control + green tea (CGT), high-fat diet (HF) and high-fat diet + green tea (HFGT). The mice following parameters were evaluated from all experimental groups: BMI, by every two weeks; fasting glycemia (i.e. at the start and final experiment); response to the OGTT, at 15 weeks; and ITT, at 16 weeks; and biochemical tests, at 16 weeks. The mice fed the HFD when compared to those fed the C diet showed an increase of final body weight (p ≤ 0.001), relative liver weight (p ≤ 0.001), fasting glycemia (p ≤ 0.001), HDL cholesterol, and ALT (P ≤ 0.05).  Moreover, the HFD group showed other disturbances such as glucose intolerance (p ≤ 0.05), and peripheral insulin resistance (p ≤ 0.001) evidenced by OGTT and ITT AUC values. Further, the effect of green tea on the serum lipid profile was evaluated on the HFDGT group compared to the HFD group. The HFDGT group showed a decrease of final body weight (p ≤ 0.05), fasting glycemia (p ≤ 0.01), HDL cholesterol (p ≤ 0.001), total cholesterol (p ≤ 0.001),  and ALT (p ≤ 0.05) when compared to the HFD group.  On the HFDGT group, green tea was effective in restoring glucose intolerance (p ≤ 0.05) but did not have a significant impact on ITT values.  The overall metabolic responses to the green tea infusion proved to be desirable. Green tea contributed to glucose metabolism and seems to improve liver function

10
  • ISLAINE SANTOS SILVA
  • The use of different fining agents in different steps of winemaking and its impacts on the quality of Chenin Blanc white wines

  • Líder : ALINE CAMARÃO TELLES BIASOTO
  • MIEMBROS DE LA BANCA :
  • ALINE CAMARÃO TELLES BIASOTO
  • CAROLINA OLIVEIRA DE SOUZA
  • FÁBIO LANER LENK
  • Data: 16-oct-2020


  • Resumen Espectáculo
  • Clearness is one of the qualities most appreciated and required by the white wine consumer. The clarity and stability can be used through clarification, by the action of clarifying agents. Clarification consists of adding substances that induce flocculation and sedimentation in cloudy or colloidal instability wines, ensuring long-term clarity and preventing deposits during storage. However, this operation alters the composition of the wine, since removing substances phenolic, also influencing color characteristics, in addition to intervening in the aromatic profile of wine. A variety of protein clarifying agents of animal origin have been used worldwide to make white wines, however, with the advent of bovine spongiform encephalopathy in the 1980s and the allergenic nature of certain proteins, considerable interest has emerged in the replacement of these animal proteins and the alternative use of clarifying agents. In this sense, this study tested clarifying agents of animal, synthetic and mineral origins, relationships in different stages of winemaking, in order to evaluate their effects on the physical-chemical composition, the content of phenolic compounds, the antioxidant potential and the profile sensory effect of the white wine of the cultivar 'Chenin Blanc', with the intention of optimizing a clarification operation for the wine industry, by choosing the agents and the steps that should be due, more appropriate to the final product, as well as, evaluating the effectiveness of alternative agents to those of animal origin..Five treatments were tested: a control (without the use of clarifiers), T1 - with the use of bentonite in debourbage (0.3 g L-1) and in stabilization (0.4 g L-1), T2 - with bentonite in the stabilization (0.7 g L-1), T3 - with PVPP (0.05 g L-1) and bentonite (0.1 g L-1) in alcoholic fermentation (AF) and bentonite (0.6 g L- 1) in stabilization and T4 - with gelatin (2 mL L-¹) and bentonite (0.1 g L-1) in AF and bentonite (0.6 g L-1) in stabilization. Physical analyzes, instrumental color analyzes, phenolic compounds by HPLC, antioxidant potential (DPPH, ABTS and FRAP), sensory profile (CATA) and acceptance test were performed. It was evident that the use of clarifying agents does not express a negative effect on the phenolic composition of wines, the antioxidant potential and sensory quality. The use of bentonite in the elimination and stabilization (T1) of wines, expresses the greater preservation of the phenolic compounds present, especially the phenolic acids, flavonols and some flavan-3-ols such as (+) - catechin and procyanidin B1, responsible for the highest antioxidant potential.

11
  • CYNTHIA BRASIL DA NOBREGA DE TEIVE E ARGOLLO
  • Physical-chemical profile, concentration of phenolic compounds and antioxidant capacity of mead produced from wild yeasts and supplemented with different activants

  • Líder : ALINE CAMARÃO TELLES BIASOTO
  • MIEMBROS DE LA BANCA :
  • ALINE CAMARÃO TELLES BIASOTO
  • CAROLINA OLIVEIRA DE SOUZA
  • MAYARA SALGADO SILVA
  • Data: 30-oct-2020


  • Resumen Espectáculo
  • The northeast of Brazil is the second largest honey producer in the country, collaborating with the export quantity of Brazil that accounts the sixth place in the world ranking. Nevertheless, honey consumption in country is low and it is necessary to seek strategies to explore the domestic market. However, the brazilian beverage industry is mainly aimed at domestic consumption and has growth opportunities, such as product differentiation and consumption experience. In this sense, honey can be better exploited in the mead production and therefore stimulate the domestic market and beekeeping in the northeast of Brazil. Thus, the aim of study was to evaluate the quality of mead produced from Apis mellifera honey with different yeasts and additives, natural and comercial ones. Worts were set at 22oBx and fermented into six lots: H1 - native honey yeasts; H2 - native honey yeasts and pollen (30g L-1); H3 - native honey yeasts and ammonium phosphate (0,4g L-1); H4 – commercial S. Bayanus yeast (0,3g L-1); H5 – commercial S. Bayanus yeast (0,3g L-1) and pollen (30g L-1); H6 - commercial S. Bayanus yeast (0,3g L-1) and ammonium phosphate (0,4g L-1). Meads were evaluated using physicochemical parameters (pH, specific gravity, volatile and total acidity, alcohol content and dry extract, free and total SO2, reducing sugars, color (L*, a*, b*, C*, H*), total phenolic content, phenolic profiling and antioxidant capacity). Results were submitted to ANOVA and Tukey's test (p≤0,05), in addition to Principal Component Analysis (PCA) and Pearson's Correlation coefficients (p≤0,05). All lots were significant difference (p≤0.5) in physicochemical parameters for most of variables analyzed, distinguishing the lots using pollen addition from the others. However, all meads were in compliance with brazilian legislation and were classified as sweet mead, as it had sugar content greater than 3g L-1. In addition, meads contained a wide variety of bioactive compounds, 17 phenolic compounds were detected, which there was an emphasis on total flavonols of lots using pollen addition that presented high concentration of these compounds. Therefore, lots using pollen addition revealed greater antioxidant capacity, since the phenolic compounds detected demonstrated strong linear correlation (p <0,05) with antioxidant activity (DPPH, ABTS and FRAP), differentiating them from other treatments according to ACP. In conclusion, using of pollen is, initially, an interesting alternative in mead elaboration in terms of increasing the product quality, mainly from the nutraceutical point of view. However, studies related to fermentation kinetics and sensory evaluation of the product should also be conducted in order to provide additional information to define the best yeast and additive for mead.

2019
Disertaciones
1
  • ERIVAL AMORIM GOMES JUNIOR

  • Risk assessment of exposure to lead in vegetables cultivated and consumed in the Maragogipinho region - Bahia

  • Líder : JOSE ANTONIO MENEZES FILHO
  • MIEMBROS DE LA BANCA :
  • JOSE ANTONIO MENEZES FILHO
  • LUIZ ROGERIO PINHO DE ANDRADE LIMA
  • MARIANGELA VIEIRA LOPES
  • Data: 20-feb-2019


  • Resumen Espectáculo
  • Lead (Pb) is a heavy metal ubiquitous in the environment, with toxic characteristics to the environment and to the human health. Maragogipinho is a community located in the region of the Reconcavo Baiano which has the local economy based on the production of ceramic pieces. During the production of the ceramic utensils, the artisans process the Pb without any type of control and protection, contaminating itself and the environment. Thus, the objectives of this work were: (i) to measure the levels of Pb present in soil and in vegetables cultivated in this region; (ii) evaluate the transfer of Pb present in the soil to the vegetables and (iii) carry out a risk assessment based on the consumption of vegetables potentially contaminated by this toxic metal. The measurement of Pb contents in soil and vegetable samples were carried out using graphite furnace atomic absorption spectrometry (GFAAS), after acid mineralization in a microwave oven. Food frequency questionnaires were used to estimate the daily intake of the evaluated vegetables, and the anthropometric measurements of the study population were measured. The evaluated vegetables were manioc, papaya, banana, and coriander. From the data referring to the intake of selected vegetables, Pb content in the vegetables and data collected directly from the population, a risk non-carcinogenic assessment was performed using target hazard quotient (THQ) methodology. The median Pb concentrations in soil samples were 14.7 mg.kg-1 (3,7-66,5) for surface soil with 3cm-depth and 13.4 mg.kg-1 (0, 5-106.1) for 20-cm-depth soil. Pb levels in papaya and banana samples were below the limit of detection (LD). The median (range) of Pb in cassava and coriander samples were 0.06 mg.kg-1 (0.02-0.29) and 0.22 mg.kg-1 (0.06-3.02), respectively. The transfer factor was calculated to evaluate the mobility of Pb and presented a value of 0.05 for the cassava samples and 0.16 for the coriander samples, indicating that the leafy accumulates more lead than the roots. According to the daily intake of the evaluated vegetables, the average intake of the studied population is about 43 g (7-450) of cassava, 65 g (6.5-501.4) of banana, 11 g (20-85) of papaya. THQs calculated for the cassava samples were 0.0025 for the adult population and 0.0033 for the children considering the data collected directly from the population and 0.0010 considering a scenario frequently used by the regulatory agencies, however, all present an insignificant risk. Despite the use of Pb by the artisans and environmental contamination reported in the community, median concentrations of Pb were below the maximum limits allowed by regulatory agencies, so the risk arising from the ingestion of vegetables cultivated in the Maragogipinho community is considered insignificant. Therefore, it is possible to conclude that the consumption of vegetables cultivated in this community does not seem to represent a food insecurity.

2
  • SERGIANE ALVES DE ARAÚJO LIMA
  • QUALITY OF RAW AND SUN MEAT  OF NELORE DUCKLES SUBMITTED WITH LAURIC ACID DIET
  • Líder : RONALDO LOPES OLIVEIRA
  • MIEMBROS DE LA BANCA :
  • RONALDO LOPES OLIVEIRA
  • THADEU MARINIELLO SILVA
  • JARBAS MIGUEL DA SILVA JÚNIOR
  • Data: 18-abr-2019


  • Resumen Espectáculo
  • Brazil is responsible for one of the largest cattle herds in the world, projections show the increase of this sector, due to the increase in demand by the consumer population. This increase in meat production, broadens the search for additives that bring improvements in the quality of fresh meat and salted sun-dried. The objective of this work is to evaluate the quality of fresh meat and salted sun-dried of Nellore steers fed with different levels of lauric acid. The objective of this work is to evaluate the quality of fresh meat and salted sun-dried of Nellore steers fed with different levels of lauric acid. Thirty - two cattle, distributed in a completely randomized design, with four (diets) and eight replicates (animals) were used. The diets consisted of bulky food (Cynodon sp.), concentrated mixture and lauric acid at levels of 0.0; 0.5; 1.0; 1.5% of the dry matter of the total diet. They were performed in fresh meat and salted sun-dried, centesimal analysis, pH measurement, color index, weight loss by cooking, water retention capacity, shear force, collagen, lipid oxidation in 4 periods, composition of acids and sensory evaluation. The data found from the SAS® 9.1 software, through polynomial contrast to evaluate the effect of the treatments, with 5% significance. The inclusion of lauric acid in the diet of cattle, in up to 1.5%, had no effect on the physical-chemical characteristics of fresh meat, and in most of the characteristics of the salted sun-dried. However, it was observed an effect on the profile of the evaluated fatty acids, some beneficial to human health, in contrast, compromised the attributes in the sensorial evaluation. The use of lauric acid in the diet of cattle up to 1.5% of total DM does not alter the physico-chemical composition and color of fresh meat, but is responsible for the increase of fatty acids beneficial to health and does not influence positively the sensorial attributes of fresh meat and salted sun-dried.

3
  • BRISA ROSATTI PEREIRA GONÇALVES

  • Production and structural identification of secondary metabolite of endophytic fungus Pseudofusicoccum sp.

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • MARCELO ANDRES UMSZA GUEZ
  • RICARDO WAGNER DIAS PORTELA
  • WARLEY BORGES
  • Data: 26-abr-2019


  • Resumen Espectáculo
  • In this work the identification of the endophytic fungus Pseudofusicoccum sp. isolated plant Manilkara salzmannii. Subsequently it was evaluated the Production and structural identification of secondary metabolite of fungus (pigment).
4
  • IURI LIMA DOS SANTOS ROSARIO
  • OCCURRENCE AND CHARACTERIZATION OF SHIGA-TOXIN PRODUCER ISOLATED FROM DAIRY PRODUCTS IN THE STATE OF BAHIA

  • Líder : MARION PEREIRA DA COSTA
  • MIEMBROS DE LA BANCA :
  • MARION PEREIRA DA COSTA
  • CARLOS PASQUALIN CAVALHEIRO
  • NELSON DE CARVALHO DELFINO
  • Data: 29-abr-2019


  • Resumen Espectáculo
  • Coliform bacteria are a group of microorganisms that indicates poor hygiene practices when found in food. Within this group, Escherichia coli in food may indicate fecal contamination, besides representing the presence of potential pathogens that may cause human diseases. While most species are commensal, known pathogenic groups such as Shiga toxin-producing E. coli (STEC) represents a public health concern due to its ability to produce Stx1 and Stx2 toxins, being able to cause intestinal and extraintestinal diseases. Therefore, monitoring milk production stages and checking the innocuity of dairy products are crucial for food safety. In this context, this study aimed to verify the prevalence of thermotolerant coliforms, E. coli and STEC strains, besides evaluating the resistance profile to 12 antimicrobials used in both veterinary and human medicine. A total of 123 dairy samples were obtained from 15 different locations in the state of Bahia, Brazil (Baixa Grande, Cachoeira, Camaçari, Castro Alves, Feira de Santana, Ichú, Ipirá, Irecê, Mundo Novo, Pedrão, Riachão do Jacuípe, São Sebastião do Passé, Simões Filho, Teodoro Sampaio, and Wanderley). The samples were submitted to coliform assay and streak plating on Eosin Methylene Blue agar. Positive E. coli strains were submitted to duplex and multiplex polymerase chain reaction for STEC confirmation and serotyping of non-O157, respectively. Confirmed STEC strains were also tested to 12 antibiotics by disk diffusion technique. Unsatisfactory levels of thermotolerant coliform were observed in 16% of the tested samples, and a total of 9 samples had the presence of E. coli. In addition, 9 STEC strains were isolated from pasteurized cream (2/9), minas padrão cheese (2/9), minas frescal cheese (4/9), and ricotta (1/9). Two STEC strains exhibited resistance to streptomycin, whereas five strains presented an intermediary resistance to ampicillin, including the two aforecited. The presence of STEC strains in milk and milk products represents a risk to the consumer, especially the young and elderly, and contamination can occur during different stages of milk chain.

5
  • LIS NERY NUNES DA SILVA
  • Street Food in the Context of a Public University: diagnosis and intervention strategies to promote food safety

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • ALAISE GIL GUIMARAES
  • ROGERIA COMASTRI DE CASTRO ALMEIDA
  • CRISTIAN OLIVEIRA BENEVIDES SANCHES LEAL
  • Data: 30-abr-2019


  • Resumen Espectáculo
  • Unsafe food in informal commerce is a public health concern in Brazil and in other countries, and is also a problem in the street food trade. Thus, the objective of this study was to characterize this sector, aiming at the promotion of food safety and the adequacy of the vendors to the regulatory requirements, in the surroundings of a public institution of higher education, in Salvador-BA. Prior to the data collection, local observation and mapping of the trade were performed. Subsequently, data were collected, along with 79 vendors, installed on two campi, by the application of semi-structured questionnaires, addressing dimensions related to sellers, work, sale conditions and food hygiene. Most of the interviewees were women (63.29%), ages between 31 and 50, whose main reason for work was unemployment (82.28%). Among the sellers, 75.95% had no municipal license or training in Good Manufacturing Practices. The workday recorded an average of 8.58 hours. The most commercialized products included: salty pastries (45,57%), industrialized drinks (45,57%) and natural juices (43,04%). It was verified that 84.81% of the participants worked in fixed points. Regarding the infrastructure, 68.35% had drinking water, 87.34% of garbage collection and 18.99% electricity - however, only 39.80% had water for exclusive use with food. Nonconformities were identified regarding the personal hygiene of vendors, including: simultaneous handling of cash and food, non-use of gloves, hair protection and hand hygiene. In the case of perishable foods, 62.02% were kept at room temperature. The results evidenced sanitary inadequacies, signaling risks to food safety and the need for public action, by the institution and regulatory agencies to protect consumers' health.

6
  • AUGUSTO CEZAR MARTINS SOUZA DA SILVA
  • EVALUATION OF THE STANDARD OF IDENTITY AND QUALITY AND PHYSICO-CHEMICAL CHARACTERISTICS OF COPIOBA AND COMMON FLOUR OF BAÑO RECONCAVA

  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • CAMILA DUARTE FERREIRA RIBEIRO
  • Data: 30-abr-2019


  • Resumen Espectáculo
  • Manihot (Manihot esculenta) is a tuberose very well known in Brazil. Most of this raw material is destined to the manufacture of cassava flour, being processed of artisan form, in factories denominated "houses of flour". The regions of the Recôncavo Baiano, and especially the Copioba Valley, assumed a historical role as producer of differentiated quality cassava flour, historically recognized as Copioba flour. The environmental and human conditions found in this region, along with the quality of the flour produced, characterize the product as a candidate for Geographical Indication (GI). The objective of this work was to characterize cassava flour produced in and outside the Copioba Valley, verifying compliance with the Identity and Quality Parameters (IQP), as well as physical, physicochemical and morphological compositions, contributing to the product. 30 flour samples were analyzed: 10 samples of Copioba do Vale flour, 10 samples of Vale Common flour, and 10 samples of Copioba flour from outside the Vale. The results of moisture (1.67 to 7.58%), ash (0.65 to 1.16%), crude fiber (1.47 to 2.19), acidity (3.83 to 6.65 meq NaOH 100 g -1), starch (77.98 to 86.19%), crude protein (0.64 to 1.07%), total lipids (0.35 to 0.73%) and water activity , 18 to 0.50) of the Copioba flour from within the Valley; moisture (3.74 to 8.21%), ash (0.62 to 1.11%), crude fiber (1.73 to 2.76%), acidity (1.73 to 6.30 meq NaOH and 100 g -1), starch (76.78 to 83.55%), crude protein (0.81 to 1.09%), lipids (0.39 to 0.72%) and water activity (0.27 to 0 , 66) of the common flours from within the valley; moisture content (3.53 to 7.31%), ash (0.46 to 1.15%), crude fiber (1.78 to 2.23%) acidity (1.50 to 6.76 meq NaOH 100 g-1), starch (71.18 to 85.2%), crude protein (0.89 to 1.20%), total lipids (0.37 to 0.74%) and water activity (0.20 to 0 , 47) of the Copioba flour from outside the valley. 100% of the flours analyzed complied with the requirements of humidity (maximum 13%) and ash (maximum 1,4%). The exception was the fiber content of Common Flour (20% of the samples), and the starch content in which 20% (Copioba within the Vale) and 30% (Common and Copioba outside the Vale) presented values below the legislation (Fiber ≤ 2.3% and Starch ≥ 80%). Cassava flour was classified as having low humidity (1.67 to 8.21%), low water activity (0.18 to 0.66), high acidity (100% Copioba do Vale, 80% Vale Common and 70% Copioba outside the Vale), therefore extremely dry and acidic, with fine and medium granulometry, mainly the Copioba do Vale flour. The Copioba do Vale flour is mainly Type 1, with a lower classification as "out of type", while Copioba's non-Vale flour is mostly Type 3 and "out of type". The Common Flour of the Valley is distributed in the 4 Types. Scanning Electron Micrographs also showed that the morphological characteristics differentiate the Copioba flour from the Vale Valley. These parameters together are considered to be differentiating factors of the Copioba Flours of the Comune and Copioba Flours outside the Vale, which, together with the particular climatic characteristics and recognized historical notoriety, may support the process of a GI of the product. However, 100% of the flours present foreign matter, indicating that the care with the process hygiene steps need to be improved

7
  • THÂMILLA THALLINE BATISTA DE OLIVEIRA
  • DEVELOPMENT OF BIOMASS MICROENCAPSULATION OF SPIRULINA SP. LEB-18 AND ITS INCORPORATION IN POWDER: PROPERTY AND FUNCTIONAL POTENTIAL

  • Líder : ELIETE DA SILVA BISPO
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • JANICE IZABEL DRUZIAN
  • MARIA BEATRIZ DE ABREU GLORIA
  • Data: 31-may-2019


  • Resumen Espectáculo
  • Existe uma preocupação crescente da população com relação à saúde e bem estar, aumentando então o consumo de alimentos funcionais. O mercado de achocolatados também acompanha a tendência do mercado alimentício. Nesse contexto, desenvolver um achocolatado em pó com adição da microalga Spirulina platensis sp. LEB-18 é uma opção inovadora. Desta forma, a junção do pó de cacau e da Spirulina sp. LEB-18 pode favorecer a formulação de uma bebida com alegação de propriedade funcional. Utilizou-se da secagem por atomização, microencapsulando a biomassa de Spirulina sp. LEB-18 e incorporando-a no pó de cacau. A Spirulina sp. LEB-18 foi microencapsulada com maltodextrina e lecitina de soja, e três formulações de achocolatado em pó com diferentes concentrações da Spirulina sp. LEB-18 microencapsulada (FControle: 0%; F1: 5%; F2: 8,75%) foram desenvolvidas. A caracterização da Spirulina sp. LEB-18, do microencapsulado e das formulações foram realizadas por análises químicas, físicas, físico-químicas e aceitação sensorial. A Spirulina sp. LEB-18 microencapsulada apresentou um aumento no teor proteico, mantendo a umidade em torno de 4% e reduzindo os teores de lipídeos totais. Não foi observada diferença significativa para carboidratos e cinzas dos achocolatados. Quanto à caracterização física, todas as amostras analisadas apresentaram boa estabilidade de suspensão devido à repulsão das partículas e baixa higroscopicidade (<10%). Em relação às análises químicas, houve um incremento dos compostos fenólicos aumentando 31 e 39% nas formulações de achocolatado com adição da Spirulina sp. LEB-18 microencapsulada. O conteúdo de DPPH apresentou variações de 0,488 a 0,909 µg·mL-1 para a F1 e Spirulina sp. LEB-18. Sensorialmente, os consumidores estão começando a aceitar a incorporação de componentes na elaboração de novos produtos funcionais. A principal desvantagem da Spirulina sp. LEB-18 como alimento é que ela tem odor e sabor que desagradam os consumidores, porém, os resultados mostraram que a biomassa de Spirulina LEB-18 microencapsulada incorporada ao cacau em pó pode mascarar estes atributos, com a vantagem adicional de potencializar a qualidade nutricional e funcional do achocolatado, podendo ser consumido pelo publico que  procura por novos alimentos com alegação de propriedades funcionais.

8
  • PEDRO PAULO LORDELO GUIMARÃES TAVARES
  • PREPARATION OF NEW KEFIR BEVERAGES WITH REDUCED HEAT VALUE FROM MIXED TROPICAL FRUIT JUICES.

  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MARCELO ANDRES UMSZA GUEZ
  • FERLANDO LIMA SANTOS
  • Data: 11-jun-2019


  • Resumen Espectáculo
  • Kefir is a fermented drink from Eastern Europe. The most used fermentative substrates are cow's milk and water with brown sugar. Other substrates have been used, such as fruit juices and water soluble vegetable extracts, however, further studies are needed to evaluate the viability of these matrices as new products to be inserted in the food market. The Brazilian market for ready-to-drink juices and nectars is expanding, through the incorporation of mixed fruit juices, such as umbu and mango, as a way of elaborating new flavors for the food market, which has also focused on obtaining products with reduced caloric value. In this sense, stevia presents interesting potential as a sweetener substitute sugar because it is of natural origin and low toxicity. The objective of the research was to evaluate the use of kefir grains as the initial culture for symbiotic kefir beverage based on low calorie tropical fruits sweetened with stevia. The fermentation was carried out by the inoculation of kefir grains in mixed mango and umbu pulps. Twelve formulations were evaluated through a sensory acceptance analysis. the two highest-scoring samples were characterized by ash, moisture, protein, fat, carbohydrate, caloric content and went through a 30-day refrigeration period (5 ° C) in which lactic acid bacteria, yeast, pH, acidity, color (L *, a *, b *, ΔE), soluble solids, ascorbic acid, sensory acceptance and purchase intention evaluated every 10 days. The two samples with higher content of sucrose / stevia and pulp of fruit content were the most accepted by the tasters. The stevia-sweetened beverage had statistically lower calorie content. The results showed decrease in pH, vitamin C, color parameters and increase of acidity and dE. Both beverages presented good acceptance and there was no statistical difference for the sensorial analyzes until the 20th day, but they could only be considered probiotic until the 10th day of storage, according to the LAB count. The sweet drink with stevia presented promising results in relation to sucrose sweetened drink for the elaboration of new low-calorie symbiotic beverage.

9
  • JÉSSICA SANTIAGO FALCÃO
  • Elaboration and evaluation of jellies based on umbu (Spondias tuberosa Arr Cam) plus microalga (Spirulina platensis).

  • Líder : EDERLAN DE SOUZA FERREIRA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • EDERLAN DE SOUZA FERREIRA
  • HENRIQUE RODRIGUES MARCELINO
  • Data: 28-jun-2019


  • Resumen Espectáculo
  • The fruits of umbu (Spondias tuberosa Arr Cam.) are marketed in the "in natura" way in open markets, markets, city streets and roads, but it has the characteristic of being very perishable. The production of products from fruit their best use, such as jellies formulation. However, generally this type of product are considered poor in nutritional terms, since basically they are constituted of sugars. On the other hand, the addition and / or supplementation of other ingredients may better this aspect. In this context, considering the existence of few studies related to the post-harvest use of the umbu fruits, the present study determined the physicochemical characteristics, color parameters, centesimal composition and commercial acceptability test of an umbu jelly added with different concentrations of Spirulina LEB-18. The formulations show significant amounts of protein 4.55 ± 0.84%; 5.45 ± 0.19% and 8.53 ± 0.44%, and ashes 0.58 ± 0.06%; 0.65 ± 0.06% and 0.75 ± 0.01%, compared to the control. In addition, the microbiological analyzes of umbu jellies with and without Spirulina were all absent from total coliforms (NMP.g-1), molds, yeasts and for S. aureus. Regarding the purchase of the standard jelly and with Spirulina, a reasonable result was found by the judges, corresponding to "would buy frequently" and "would buy infrequently". However, the results observed in the present study suggest that the product developed consists of formulations with a higher protein level compared to the ones on the market, and green in color, characteristic of umbu fruit.

10
  • JOICIANA CARDOSO ARRUDA DE SOUZA
  • EXTRACTION AND REOLOGICAL AND TECHNOLOGICAL CHARACTERIZATION OF MANGO SEED ALMOND STARCH 
    (Mangifera indica L.) TOMMY ATKINS VARIETY
  • Líder : RENATO SOUZA CRUZ
  • MIEMBROS DE LA BANCA :
  • CHRISTIANO VIEIRA PIRES
  • CÍNTIA MARIA ARIANI FONTES
  • RENATO SOUZA CRUZ
  • Data: 09-jul-2019


  • Resumen Espectáculo
  • With great prominence in the Brazilian economy, fruit farming is widely used industrially. Mango agroindustry is an expanding activity in Brazil and produces a large volume of waste that is not reused and can be disposed of inappropriately in the environment. In the food industry, starch may have applicability as an ingredient to alter or control various characteristics such as texture, appearance, consistency, moisture and shelflife stability. The aim of this study were to extract the almond starch from the mango (Mangifera indica L.) Tommy Atkins variety and to characterize it as its technological, rheological and physical-chemical properties and to analyze the texture profile of the starch gels when submitted to additives commonly used in the food industry. The analyzed starch presented 53.89% of extraction yield, the moisture content was presented within the expected demonstrating a lower value than the maximum allowed for the traditional sources of starch, according to the legislation. According to the amylose content, the analyzed starch was considered as high amylose starch. The syneresis rate was considered low which showed that the starch has good stability. The starch is ability to absorb oil was greater than that of water. The maximum viscosity found was higher than that of maize at 92°C. The starch granules presented irregular ellipsoidal spherical shapes with surface with grooves and differentiated sizes with initial gelatinization temperatures at 75.3°C. The diffractogram showed that the starch presented type A crystallinity with a degree of crystallinity of 54.74%. The swelling power increased with increasing temperature. A significant difference (p ≤ 0.05) was observed in the texture profile (TPA) of the starch gel submitted to the additives sodium chloride, sucrose and citric acid when compared to the control sample, whereas when added with emulsifier there was no significant difference in none of the analyzed parameters (hardness, cohesiveness and gumminess). Starch properties indicated great potential for use in food products, especially those requiring a low rate of syneresis such as puddings and jellies.

11
  • JÉSSICA FRANCO FREITAS MACENA
  • MORPHOLOGICAL, PHYSICAL-CHEMICAL AND TECHNOLOGICAL PROPERTIES OF STARCH OF AVOCADO SEEDS (Persea americana Mill)
  • Líder : RENATO SOUZA CRUZ
  • MIEMBROS DE LA BANCA :
  • CHRISTIANO VIEIRA PIRES
  • CÍNTIA MARIA ARIANI FONTES
  • RENATO SOUZA CRUZ
  • Data: 10-jul-2019


  • Resumen Espectáculo
  • Avocados (Persea americana Mill) is a byproduct of fruit processing. This lump is a potential alternative source of starch. Starch is widely used as a functional ingredient in food systems, and is usually combined with additives such as salt, sugars, acids and fats, among others in product formulations. The objectives of the present study were to perform the physico-chemical and morphological characterization of the starch extracted from the avocado core and technological property from the evaluation of the consistency of the gels in the presence of additives. The extraction yield was 10.67% starch with a final moisture of 15.36%. The amylose content was higher than that of other cereal and tuber starches. The x-ray diffraction patterns confirmed the presence of type B crystallinity, typical of fruits and tubers, with a degree of crystallinity of 56.09%. The swelling power increased for all samples according to the elevation of temperature (above 70 ° C). The use of avocado starch was limited in foods subject to storage under freezing due to their high syneresis rate of 51.03%. Viscoamilography showed that the maximum viscosity was higher than that reported for conventional maize starch, besides presenting as stable starch at high temperatures. The analysis of TPA showed that avocado starch gels added with different additives and concentrations varied significantly (p <0.05) from the control sample, especially in the hardness and gum profiles. The properties of the starch of the avocado fruit indicate a wide application potential and can be used directly in the food, cosmetics, pharmaceutical or thermoplastic industries for the preparation of materials for which the biodegradable character is desirable.

12
  • JÉSSICA PASSOS CARNEIRO
  • Evaluation of Physical-Chemical Parameters as a Contribution to the Strengthening of the Bahia Cocoa Origin Indication

  • Líder : SERGIO EDUARDO SOARES
  • MIEMBROS DE LA BANCA :
  • SERGIO EDUARDO SOARES
  • ELIETE DA SILVA BISPO
  • CAROLINA OLIVEIRA DE SOUZA
  • LEONARDO FONSECA MACIEL
  • ADRIANA CRISTINA REIS FERREIRA
  • Data: 12-jul-2019


  • Resumen Espectáculo
  • The interest in the cultivation of cocoa (Theobroma cacao L.) is related to the use of its seeds for the production of derivatives, mainly for the production of chocolate, and is therefore prominent in the economies of many countries, including Brazil. The characteristics of the cocoa derivatives are related not only to the genetic attributes of cacao but also to the changes that occur during their processing. Bahia is considered the largest producer of cocoa beans in Brazil and has been trying to position itself in the specialized market, mainly through the production of fine and / or special chocolate. However, in Brazil, there is still no legislation that characterizes and classifies almonds of this type of cocoa according to physical, chemical and sensorial standards. In this context, the objective of the present work was to establish the physico-chemical characterization of 20 cocoa samples from the South of Bahia to contribute to the chemical classification of the Tipe 1 cocoa from the South of Bahia. Fermented and dried samples were roasted in an oven. Soon after, the nibs were produced, which were submitted to the chemical analyzes - humidity, proteins, lipids, ashes and fatty acids. The results obtained in the mentioned study were submitted to tests of variance and multivariate statistics. Therefore, the roasting process reduced the moisture content of the almonds to an average percentage of 3.42%, with a significant difference between the groups of dry and toasted samples. The samples were classified as Type I, according to Normative Instruction 38/2008 of the Ministry of Agriculture, Livestock and Supply (MAPA), thus highlighting the potential of the cacao region of the South of Bahia for the production of Type 1 cacao. Analysis of Principal Components (PCA) for the chemical composition allowed to discriminate the different cocoa samples and, with that of Hierarchical Component Analysis (HCA), the formation of three groups was verified. In addition, it was noted that the protein and lipid contents were the two main components used together, explaining 67.81% of the total variance observed. As for the fatty acid profile, the presence of three major fatty acids - palmitic stearic and oleic acid was observed, the latter being found in a higher amount when compared to the content found in samples studied by other authors, which may confer greater softness to the butter of cacao. In addition, the protein contents found may be due to the fermentation profile, as well as the total nitrogen content in the soil and the genetic variety. In addition, the similarity as a function of lipid content may be due to factors such as variety, conditions of cultivation and processing of cocoa. In view of the above, it is concluded that multivariate techniques are applicable for the identification and discrimination of cocoa samples, as well as for proposing an investigation of other parameters, aiming, therefore, for a better classification of the cocoa of the Southern Indication of Origin Bahia.

13
  • ROBERTA BARRETO DE ANDRADE BULOS

  • BIOATIVE COMPOUNDS, ANTIOXIDANT AND ANTIMICROBIAL ACTIVITY OF VARIETY GRAPE PEEL EXTRACTS Syrah: EVALUATION OF THE EFFECTS OF EXTRACTION VARIABLES

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • MARCELO ANDRES UMSZA GUEZ
  • EDERLAN DE SOUZA FERREIRA
  • SAMANTHA SERRA COSTA
  • Data: 29-jul-2019


  • Resumen Espectáculo
  • Several non-conventional extraction techniques are investigated in order to reach the best possible yield for recovering phenolic compounds present in fruits and vegetables wastes. The main of this research was to evaluate the impact of different temperatures (25, 40, 50 60°C) and time of exposing to ultrasound-assisted (0, 10, 20, 30 minutes) for the extracts obtained from grape peels (var. Syrah), using ethanol as solvent. Were quantified by the total phenol, flavonoids and antioxidant activity. Analyzes for an evaluation of antimicrobial and antifungal activity were also performed. The extracts exposed to ultrasound-assisted for 20 minutes in all temperatures tested were the one that showed the higher antioxidant activity with CE50 values between ,21 e 0,24 mg.mL-1, highlighting the extract obtained by the temperature of 60°C, which was the responsible for the higher flavonoids content (0,40±0,04). However, of all samples submitted to antimicrobial activity test, the extract exposed to ultrasound-assisted for 20 minutes and 40°C was the only one that inhibited the growth of bacteria’s Staphylococcus aureus and Escherichia coli along all the concentration used. In general, it was verified the influence of the variables temperatures and time to ultrasound-assisted applied to the extraction of bioactive compounds, as well as to improve the antioxidant activity from the extracts obtained.

14
  • ISRAEL CONCEIÇÃO SILVA
  • FOOD SAFETY IN RURAL SCHOOLS AND NURSERIES: A STUDY IN A MUNICIPALITY OF BAIXO SUL BAIANO 

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • ALAISE GIL GUIMARAES
  • ISABELLA DE MATOS MENDES DA SILVA
  • MARIA DA CONCEICAO PEREIRA DA FONSECA
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 28-ago-2019


  • Resumen Espectáculo
  • The National School Feeding Program comprises one of the oldest food programs in Brazil, and is responsible for providing adequate nutrition and health meals in all public and philanthropic schools. In this context, the control of the sanitary quality of the food provided stands out, since most of the program's population - children and adolescents - comprises a risk group for several diseases, especially those transmitted by food. Despite the norms, it is verified that most of the Food and Nutrition Units (FNU) of the Brazilian public schools do not have adequate structure for the production of safe meals, and this reality is aggravated in the rural areas. Therefore, the characterization of the UAN regarding issues that may make food security vulnerable is indispensable. Thus, this study aimed to evaluate FNU of schools and day care centers in rural areas, in the city of Valença-BA, regarding the compliance with good manufacturing practices. This cross-sectional study was conducted with a sample of 59 schools and 5 day-care centers in the rural area of the city where data collection was performed through a structured checklist divided into five blocks. This dissertation is organized into two chapters: the first one presents a literature review with relevant topics to the research, and the second one about the good production practices in those schools and day care centers. The results showed that most of the FNU evaluated were classified as unsatisfactory, since they reached an average score (40.5%) of physical and sanitary adequacy. For individual blocks, the building and facility groups, food handlers, processes and procedures, and personal hygiene had an adequacy rate of less than 50%. Several nonconformities such as non-hygiene of utensils between the handling of raw and cooked food, absence of pest control, non-hygiene of water reservoirs and moldy, moisture and peeling of walls and ceilings were observed in the FNU, which characterizes risk conditions to the health of the children attended. In short, it is concluded that there is a need for structural and health adjustments in the FNU, as well as the implementation of training programs for staff to promote the provision of safe food to schoolchildren.

     

     

     

15
  • ELBA SANTOS DA BOA MORTE
  • INTRODUCTION OF SEAFOOD IN PREPARATIONS FOR SCHOOL FEEDING

  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • LILIAN LESSA ANDRADE
  • MARIANGELA VIEIRA LOPES
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 24-sep-2019


  • Resumen Espectáculo
  • Seafood is considered a food of great nutritional value present in the diet due to its high protein quality. However, the consumption of this important protein source is still low in the Brazilian population and the government has sought alternatives to change this reality. In this sense, the development and introduction of fish-based preparations in school meals have been indicated as a strategic solution to insert this food in the population's diet. Thus, this study aimed to evaluate the nutritional contribution of shellfish-based preparations from the biodiversity of All Saints Bay - chumbinho (Anomalocardia brasiliana), mangrove oyster (Crassostrea rhizophorae), blue crab (Callinectes sapidus) and crown sururu (Brachidontes exustus), for inclusion in school feeding. The native species came from the region of São Francisco do Conde, Bahia. The study comprised two steps. In the first one, the nutritional composition and fatty acid profile of the selected shellfish were specifically evaluated. Blue crab showed the highest moisture content (77.40 g.100g-1) and protein (18.71 g.100g-1). All shellfish were classified as low fat, with the crown sururu and the oyster having the highest content (both with 2.78 g.100g-1). High nutritional quality of lipids was observed, with a predominance of unsaturated fatty acids, especially in the mangrove oyster (48.00%). The fatty acids with the highest concentrations were: among the saturated, the palmitic (472.17 mg.100g-1), for mangrove oyster; among the monounsaturated oleic (176.40 mg.100g-1) for the pellet; and among the polyunsaturated eicosapentaenoic and docosaexaenoic (216.55 mg.100g-1 and 265.32 mg.100g-1, respectively) for the crown sururu. Among the minerals, there is the contribution in iron and zinc. In the second stage, preparations of rice, stew and frying pans were developed, also evaluating the nutritional composition and fatty acid profile. The highest protein preparations were shellfish rice (21.72 g.100g-1), crab stew (20.57g.100g-1) and crab skillet (20.89 g.100g-1). As for lipids, the formulations of sururu stew and oyster frying pan showed the highest concentrations, with 12.14 mg.100g-1 and 14.80 mg.100g-1, respectively. All the preparations presented high nutritional quality of lipids, with predominance of unsaturated fatty acids, being registered among the highest concentrations: oleic acid: in sururu stew (1929.66 mg.100g-1) and in chumbinho frying pan (3294, 99 mg.100g-1); arachidonic acid: in shellfish rice (170.14 mg.100g-1) and sururu frying pan (92.05 mg.100g-1); eicosapentaenoic acid: in oyster stew (616.76 mg.100g-1) and crab skillet (202.13 mg.100g-1); and docosahexaenoic acid: in rice, stew and frying pan sururu, with 27.42 mg.100g-1, 112.66 mg.100g-1 and 109.32 mg.100g-1, respectively. Among the minerals, there is the contribution in calcium, magnesium, phosphorus, iron and zinc. The study showed that the preparation of seafood preparations has potential for inclusion in school meals, contributing to the consumption of locally produced seafood and to the development of eating habits.

16
  • ANDRESSA DE OLIVEIRA CERQUEIRA
  • Determination of acrylamide in acarajé and potato chips by gas chromatography coupled with mass spectrometry (GC-MS) and its risk assessment for human consumption

  • Líder : JOSE ANTONIO MENEZES FILHO
  • MIEMBROS DE LA BANCA :
  • ADRIANA PAVESI ARISSETO BRAGOTTO
  • EDERLAN DE SOUZA FERREIRA
  • JOSE ANTONIO MENEZES FILHO
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • Data: 25-sep-2019


  • Resumen Espectáculo
  • Different methodologies are proposed for the identification and quantification of acrylamide (AA) in food, a potentially neurotoxic and carcinogenic byproduct formed between amino acids and reducing sugars in the Maillard reaction. Since the first release in 2002 of the relationship of its formation in foods that undergo high temperature treatment, a range of products such as coffee, breakfast cereals, potato-based foods and cookies has been explored. However, there is no data in the literature regarding the occurrence of AA in acarajé, a traditional snack of the Bahian cuisine. Animal studies have shown that AA is rapidly absorbed by all exposure routes and is faster in GI tract. Given the degree of hazard and toxicity to the consumer, its detection and quantification is very important. This work proposed to validate analytical methodology for the quantification of AA in samples of acarajé and chips and subsequently perform a health hazard assessment based on the intake of these food items. Isotopically labeled d3-acrylamide was used as the internal standard. The method involved extraction with isooctane and acetonitrile, followed by concentration and derivatization with xanthydrol. Gas chromatographic analysis with mass spectrometry (GC-MS) was used in selective ion monitoring mode. According to the established conditions, the detection and quantification limits were 3 and 10 μg/L, respectively. The recoveries ranged from 98 to 104%. The proposed analytical method was applied to eighteen samples of acarajé sold in Salvador, Bahia, Brazil and nine samples of potato chips from three main fast food chains. AA contents ranged between 16.4 to 49.9 μg/kg in the acarajés from several points of sale. In potato chips, we observed a significant difference in AA levels according to the fast food branch, with a minimum value of 48.9 and a maximum of 414.0 μg/kg. Health concern has been estimated for an AA intake of more than 1 µg/kg bw per day, and translated into an EOM of 10,000 according to EFSA (2015). Thus, the consumption of a portion of high AA content potato chips as observed in this study may represent a carcinogenic risk (EOM = 1866). On the other hand, the excessive consumption of acarajé, three or more units per week may also be associated with this long-term risk. It is important to expand the investigation, analyzing a larger number of samples and other food items. In that way, the contribution of acrylamide to the total diet can be calculated and consequently the possible health risks to the Brazilian population related to the dietary exposure to this contaminant are more propely estimated.

     

17
  • VANESSA PEREIRA MACEDO
  • PHYSICAL-CHEMICAL AND SENSORY QUALITY OF CATTLE MEAT FROM DIFFERENT GENETIC GROUPS

  • Líder : RONALDO LOPES OLIVEIRA
  • MIEMBROS DE LA BANCA :
  • RONALDO LOPES OLIVEIRA
  • ANALIVIA MARTINS BARBOSA
  • THADEU MARINIELLO SILVA
  • Data: 18-oct-2019


  • Resumen Espectáculo
  • Beef is considered a great resource in high biologic valuable proteins, complex B vitamins vitamin A and important minerals. The meat tissue traits evaluation involves a range of parameters, and the muscle to meat conversion depends of several factors, and these aspects must work together in order to maintain meat quality to human consume. Animal genetic profile is an important aspect related to carcass traits, and the crossbreeding among steers from different genotypes, as zebu and taurine breeds, can improve meat quality traits, as tenderness. The aim of this study was to evaluate physical-chemical and sensory traits of beef from different genetic groups. Eighteen steers were pooled into three genetic groups: Nellore (Nel), ½Nellore ½Angus (NA) and ½Senepol ¼Nelore ¼Angus (Three cross). After slaughtering, processing and carcass cooling, Longissimus lumborum cuts were collected and submitted to physicochemical and sensory analysis. The results demonstrated that, despite the significant weight differences among the groups Nel (615.7 kg) NA (531.7 kg) e Three cross (473.3 kg), it was not observed effects on their finishing scores. In general, crossbreds had lower subcutaneous fat (SFT) deposition and higher loin eye area (LEA) compared to zebu group, being thus earlier in muscling and hence in meat cut yields. Three cross, which was the lightest, had the highest LEA score, hence showing better performance, and, regarding crossbreds, it was earlier in SFT than NA. Furthermore, Three cross presented beef with better water holding capacity and color, showing less trend to dark cutting meat. Regarding to fatty acid composition, crossbreds, which had lower fat proportions, had significant lower SFA content. Three cross was similar to Nellore in desaturase and elongase activities, MUFA:SFA ratio and CLA content, and furthermore, had significant lower amounts of SFA 12:0 and 14:0, and thus lower atherogenicity and thrombogenicity indexes. Moreover, Three cross had better juiciness and tenderness ratings at sensory panel. Therefore, Three cross is a better option than zebu and half-blood to increase meat production due its early trend in to increase meat cuts yields, and to improve physicochemical and sensory traits, as water holding capacity and color, and these factors are greatly important for meat producers and consumers.

2018
Disertaciones
1
  • PALLOMA DE SOUZA SANTOS
  • BEVERAGES: A STUDY ON FEASIBILITY AND VITALITY FOR THE REUSE OF RESIDUE FROM FERMENTATION IN MICROCERVEJARIAS
  • Líder : ALAISE GIL GUIMARAES
  • MIEMBROS DE LA BANCA :
  • ALAISE GIL GUIMARAES
  • ANA PAULA TROVATTI UETANABARO
  • MARCELO ANDRES UMSZA GUEZ
  • Data: 26-mar-2018


  • Resumen Espectáculo
  • Beer is a very popular drink in Brazil, obtained by the alcoholic fermentation of must from barley malt and drinking water, with the addition of hops. It is the third most popular drink in the world, just after the water and tea. There is historical evidence that mankind has produced beer for more than 3,000 years. Artisan or specialty beers are a category that holds high-quality beers with high added value, generally beers that use recipes or manufacturing processes other than large-scale manufacturing. The market is in great growth and every day seeks differentiated and even exclusive products to attract more consumers of this type of beer. One of the crucial points in the brewing is the fermentation, made by the action of yeasts mainly Saccharomyces cerevisiae for high fermentation and Saccharomyces pastorianus for low fermentation. Yeasts are responsible for offering the beers flavor, aroma and texture. For each type of beer such as Belgian, English and others, select certain strains of yeast. As most of this material is not produced in Brazil, the cost of acquisition ends up being high and, therefore, the reuse of the fermentation residue ends up being viable. The objective of this research was to evaluate the viability and vitality of brewer's yeast that were obtained from the fermentation residue. Six beers with different strains of Saccharomyces were prepared, the fermentation residue of each beer was collected and a part of it was washed, after which the residue was stored under refrigeration (8-10 ° C), freezing (-22 ° C), freezing (-80 ° C) and freezing (-22 ° C) with addition of culture medium and glycerol for a period of 90 days. The viability method used was methylene blue staining, with counting of viable cells and non-viable cells. For vitality analysis, the acidification test of the medium was used, with pH observation before and after glucose insertion. Every fifteen days, viability analyzes were carried out using the methylene blue method and vitality by means of the method of acidification of the medium. The strains tended to drop both viability and vitality throughout the period, and improved performance under refrigeration obtaining the highest values of viability and vitality.

2
  • INGRID LESSA LEAL

  • ELABORATION OF FLEXIBLE FILMS OF MANDIOCA STARCH: PBAT ADDITIVATED WITH NANOCELLULOSE, URUCUM AND CITRIC ACID FOR APPLICATION IN MANGO TOMMY ATKINS IN FRESH CUT STATE

  • Líder : JANICE IZABEL DRUZIAN
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • JANICE IZABEL DRUZIAN
  • JOSIANE DANTAS VIANA BARBOSA
  • Data: 27-mar-2018


  • Resumen Espectáculo
  • Biodegradable films gain space between research as an alternative to minimize the extensive use of plastic materials, aiming to reduce the environmental impact resulting from the disposal of conventional plastic packaging. Starch presents great potential as a raw material for biodegradable films, as they are an economically viable alternative and come from renewable sources, but they have moderate oxygen permeability, low moisture barrier and low mechanical resistance, besides high production costs, generating problems in its marketing and market acceptance. When combined with synthetic polymers such as poly (butylene adipate-co-terephthalate) (PBAT), it can result in reduced costs, improved properties, and maintenance of the biodegradability of flexible films. The objective of this work was to extrude cassava starch films: PBAT, added glycerol, cellulose nanocrystals, urucum and citric acid in different concentrations, and to evaluate the efficacy of these in minimally processed Tommy Atkins mango. A total of eight formulations were prepared from the mixture of cassava starch (40% and 60%, w/w), PBAT (40% and 60%, w/w) and urucum (0.5% to 1% w/w) and constant values of glycerol (20%, w/w), suspension of cellulose nanocrystals (0.55%, w/w) and citric acid (1.0%, w/w). Two controls were used without the addition of glycerol, nanocellulose, urucum and citric acid in order to compare the results and, from their characterization, two were selected to pack mango. The moisture, water activity and colorimetry of the films and the mango were monitored during storage (T0, T7 and T14 days). The moisture content of the 8 films (3.39-7.46%), aw (0.396-0.569), thickness (0.052-0.180 mm), water vapor permeability (1.11-0.34x108 g.mm.m-2.day-1.KPa-1), water solubility (4.69-20.47%), tensile strength (1.90-6.65 MPa), and deformation (206.31-278, 41%), showed great influence of the composition. The formulations of the E4 (starch:PBAT:glycerol:nanocellulose:urucum:citric acid 40: 60: 20: 0.55: 0.5: 1%) and E7 (starch:PBAT:glycerol:nanocellulose:urucum:citric acid 40: 60: 20: 0.55: 0.5:1%) may be an alternative to Tommy Atkins mango storage in the fresh cut state, ie, shelled and pitted. The morphological characterization of these films shows regions of micropores that may facilitate the process of diffusion of water from the packaged product to the surface, allowing for decreases in moisture and water activity, associated with a higher color maintenance during fruit storage, compared to the usual use (expanded styrene + PVC film), with greater effectiveness for E7 film containing the additives nanocellulose, urucum and citric acid. However, further studies should be carried out to improve techniques and evaluate the efficacy of the antioxidant and antimicrobial activities of the additives, and these should be considered as active packaging, associated with the improvement of bioplastic properties.

3
  • FABIANE CERQUEIRA DE ALMEIDA
  • DEVELOPMENT OF MANDIOCA STARCH BLENDS AND PROTEIN ISOLATE OF BEAN-CAUPÍ CONTAINING OR NOT NANOPARTICLES OF THE SAME MATRIX AMILÁCEA
  • Líder : JANICE IZABEL DRUZIAN
  • MIEMBROS DE LA BANCA :
  • BRUNA APARECIDA SOUZA MACHADO
  • CAROLINA OLIVEIRA DE SOUZA
  • JANICE IZABEL DRUZIAN
  • Data: 27-mar-2018


  • Resumen Espectáculo
  • Starch films have shown good prospects in place of synthetic polymers but have poor mechanical properties and barriers. In this study, the effects of the incorporation of protein isolate of cowpea (0-1.5 % m/v) and cassava starch nanoparticles (3 % m/m starch), obtained by ultrasound on the properties of the nanocomposites a cassava starch base (4 % w/v). It was tested conditions that had greater efficiency in the extractibility of protein isolate of cowpea flour, being effective with the NaOH solution 0,05 mol L-1 in the proportion 1:30 m/v with 30 minutes of agitation, and the isolate protein showed 72.5 % protein and 90 % solubility between pH 8-12. The nanoparticles of cassava starch obtained by ultrasound showed a yield of 97.85 %, with immediate application to the starch:protein films. The thermogravimetric curve showed a reduction of Tonset, but at the maximum protein concentration, the loss of mass is similar to that of the control film (91.30 and 91.39 g, respectively), with thermal stability up to 250-350 ºC. In the presence of starch nanoparticles, the thermal stability was maintained in comparison to the protein-free formulation with the control formulation. The modulus of elasticity and the maximum stress increased proportionally to the protein isolate concentration (R2 = 0.99 and R2 = 0.93, respectively), with reduction of the elongation (R2 = -0.96). In the presence of nanoparticles, the maximum tension presented linear increase (R2 = 0.99) and the elongation reduced, according to the polynomial regression model (R2 = 0.97). The permeability to water vapor was significantly affected (p < 0.05), progressively reducing the concentration of protein isolate. The nanocomposites of starch:protein:starch nanoparticles resulted in more mechanically resistant films with good thermal stability and perspective for application as biodegradable films.

4
  • CALIONARA WALESKA BARBOSA DE MELO
  • Physical-chemical evaluation and identification of volatile compounds in chocolates from different varieties of cocoa (Theobroma cacao L.)
  • Líder : SERGIO EDUARDO SOARES
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • INGRID GRACA RAMOS
  • SERGIO EDUARDO SOARES
  • Data: 28-mar-2018


  • Resumen Espectáculo
  • The southern region of Bahia stands out as the second largest cocoa producer in Brazil. In 1989, cocoa production was affected by the broom broom competition in Brazil, caused by the fungus (Moniliophthora perniciosa), which affected a large part of the cocoa production. As an alternative to control the disease, new clonal varieties were developed that were resistant to fungus, highly productive and with the potential to produce quality chocolates. Throughout the processing of the almonds, until the production of the chocolate, modifications occur that form volatile compounds of great importance in the sensorial characteristics of the chocolates. In order to contribute to the Brazilian Genetic Improvement Program, the physicochemical characterization and identification of the volatile compounds profile in single-variety chocolates produced from different cacao cultivars (Theobroma cacao L.) using the microextraction technique in solid phase (SPME) equipped with a GC-MS. Cholecys of the varieties SR162, TSH1188, BN34, PH16, CEPEC2002, PS1319, CCN51, Ipiranga 1 and Para/parazinho were used in this study and were evaluated for their physicochemical composition and profile of volatile compounds by chromatographic techniques. The results of the physical-chemical analyzes carried out showed that the chocolates have their own characteristics. The samples presented significant difference in the analysis of melting point and breaking force. Regarding color, chocolates would not differ in colorimetric analyzes. The samples have similar thermogravimetric profile. Principal component analysis (PCA) and analysis hierarchical groupings (HCA) allowed to discriminate the differences and similarities of chocolates according to the composition of fatty acids and volatile compounds. Through the analyzes, it was verified that the differences between the samples are related to the varieties of cocoa and the processing conditions that were used to obtain the chocolates.

5
  • ANA CAROLINA CHAGAS PORTELA

  • Functional properties of cowpea flour (Vigna unguiculata L. Walp.), GUANDU (Cajanus cajan L. Millspaugh) and Mango (Phaseolus lunatus L.) obtained under DIFFERENT DRYING CONDITIONS

  • Líder : EDERLAN DE SOUZA FERREIRA
  • MIEMBROS DE LA BANCA :
  • CELSO DUARTE CARVALHO FILHO
  • EDERLAN DE SOUZA FERREIRA
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 29-mar-2018


  • Resumen Espectáculo
  • Bean seeds have an important nutritional, economic and social contribution, especially in developing countries. The species Vigna unguiculata (L.) Walp. (cowpea), Cajanus cajan (L.) Millspaugh (pigeon pea) and Phaseolus lunatus L. (lima bean) are used in human feeding, but still in an incipient way. The incorporation of leguminous flour can contribute positively to the nutritional composition of some products. Thus, this study evaluated the effect of temperature (40, 50, 60 ºC) and drying time (6, 9, 12 h) on cowpea, pigeon pea and lima bean on some functional properties of their flours, such as: water absorption (WA) and oil (OA), water absorption index (WAI) and water solubility index (WSI), emulsion activity (EA) and emulsion stability (ES), gel formation capacity, water activity (Aw), and also of the centesimal composition, pH, total phenolics, total flavonoids and antioxidant activity. The results of the centesimal composition showed a higher protein content for lima bean flour with 32,4%. The total phenolic concentration and the percentage of antioxidant activity were higher for pigeon pea flour, 14,6 ± 0,5 mg / g.g-1 and 63%, respectively. The results showed that the WAI and WSI did not show significant difference (p > 0,05) between the treatments, however, there was a significant difference (p < 0,05) in WA only in the lima bean between treatments 40 and 50 ºC in the time of 6 hours. However, for OA, no significant difference was observed in either treatment. The EA presented increase in the treatments 50 ºC in the studied times, however the ES was low in all the flours. The concentration of 12% of the flours studied was shown to be enough for gel formation under most conditions. However, it was possible to observe a positive correlation between EA, OA, Aw and density in the pigean pea and lima bean flours for treatments 60 ° C at all times studied, however, the cowpea flour had a positive correlation between ES, WA, Aw, WAI, WSI and density, especially in 50 °C treatments at all times. In general, with the treatment 40 °C and 9 hours, good results are obtained for all flours, however depending on the purpose in the use of the flours, some functional properties can be potencilized in different treatments.

6
  • CASSIA ARAUJO CERQUEIRA
  • PRECLINICAL EVALUATION OF THE PHARMACOKINETICS AND TISSUE PENETRATION OF RESVERATROL

  • Líder : EDERLAN DE SOUZA FERREIRA
  • MIEMBROS DE LA BANCA :
  • EDERLAN DE SOUZA FERREIRA
  • RICARDO DAVID COUTO
  • LUCIANA NALONE ANDRADE
  • Data: 29-mar-2018


  • Resumen Espectáculo
  • Resveratrol (3,5,4 trihydroxy-trans-stilbene) is a polyphenolic antioxidant compound produced by a wide variety of plants, with red wine being the most well-known source. The interest in this bioactive increased after the discovery of its pharmacological effects, which mainly include antioxidant and anti-inflammatory action, as well as cardioprotective, neuroprotective, anticancer, anti-aging, antihyperlipidemic, antiobesity and antidiabetic effect. Despite its therapeutic benefits, the mechanism of action exerted by this bioactive compound and its metabolites is still not fully elucidated, especially those related to its pharmacokinetics. Thus, a bioanalytical method for the quantification of 3,5,4-trihydroxy-trans-stilbene in plasma of Wistar rats in HPLC-UV was developed and validated. The method specific and linear in the concentration range 62.5 - 5000 ηg.mL-1 (r² = 1). The intra- and inter-day accuracy was less than or equal to 11.58% and 10.34%, respectively. In relation to the pharmacokinetic study, the i.v. bolus administration of 5 mg.kg-1, obtained the Ke of 0.09 h-1 ± 0.04, generating a half-life of 9.5 h ± 3.7, the Vd was 5.8 L.kg-1 ± 4.7, CI 0.39 LhKg-1 ± 0.26, total ASC of 6076 ng.h/mL ± 2959 and MRT of 8.7 ± 3.4. Oral administration of 100 mg.kg-1, obtained Ke of 0.12 ± 0.07 h-1, generating a half-life of 7.9 ± 4.2 h, the Vd was 13.3 ± 3.3 L.kg-1 or Cl of 1.76 ± 0.49 LhKg-1 ± 0.26, total ASC of 6519 ± 1592 ng.h/mL and MRT of 7.7 ± 1.7 h. The bioanalytical methodology developed showed linearity, sensitivity, specificity, precision and accuracy that allow the determination of plasma resveratrol in preclinical pharmacokinetic studies. Non-compartmental and population pharmacokinetic evaluation after oral and intravenous administration showed that resveratrol presented a two compartment model in both, with a longer exposure time in the body and greater distribution after oral administration when compared to iv. In addition, a high cerebral concentration after i.v administration indicates that this molecule is able to cross the blood-encephilic barrier of Wistar rats.

7
  • FABIANA PACHECO REIS BATISTA

  • PHYSICAL-CHEMICAL AND NUTRITIONAL PROPERTIES OF PIAÇAVA FRUIT SEED (Attalea funifera Martius)

  • Líder : EDERLAN DE SOUZA FERREIRA
  • MIEMBROS DE LA BANCA :
  • EDERLAN DE SOUZA FERREIRA
  • GUSTAVO GUADAGNUCCI FONTANARI
  • MARCELO ANDRES UMSZA GUEZ
  • Data: 29-mar-2018


  • Resumen Espectáculo
  • The species Attalea funifera Martius, popularly known as piassava, produces a fruit that gives rise to a seed with a high concentration of lipids. However, there are no alternative ways to harness the coconut or even the seed, partly because of limited knowledge about chemical constitution and nutritional properties. Thus, in the present study the composition of centesimal, major minerals and in vitro digestibility of the protein present in the piassava fruit, as well as the characterization of some physical-chemical and nutritional properties of the lipid and protein fraction. The results of the centesimal composition analysis showed that the piassava seed meal consists of 29.7% moisture, 50.8% lipids, 4% protein, 2.2% minerals, 10.9% fiber total and 13.3% of total carbohydrates, on a wet basis. In the partially defatted flour, a protein content of 14%, minerals of 6.1%, fibers of 15.5% and carbohydrates of 54.9% were observed. The main minerals found in the seed were potassium (531 mg.100 g-1), magnesium (179 mg.100 g-1), calcium (49 mg.100 g-1) and zinc (9 mg.100 g-1). The characterization of lipids showed that 96% of saturated fatty acids were present, and lauric acid (48%) was the major fatty acid. The values observed for the peroxide and acidity indexes were 0.26 meq.kg-1 and 0.177 mg / NaOH.g-1, respectively. The protein characterization results show that only histidine had lower values (score, QS <1.0) than the recommendations. On the other hand, significant amounts of lysine (QS <1.6), threonine (QS <1.6), valine (QS <1.5), isoleucine (QS <1.3) and methionine (QS < 1.1). The best conditions for protein solubilization were obtained using the NaOH solution (0.1 mol.L-1), 1:20 m / v ratio and 30 minutes homogenization. The glutelins represented the main class (24.63%) of the total protein of the piassava. The percentages of digestibility of total flour protein and albumin, globulin and glutelin fractions were 89%, 92%, 94% and 91%, respectively. From the results presented it is recommended the use of the piassava seed as source of some nutrientes.

8
  • CLEONICE LAYS TRINDADE RIBEIRO
  • State of the art on the supply and safety of street food in Brazil, from 2000 to 2014
  • Líder : RYZIA DE CASSIA VIEIRA CARDOSO
  • MIEMBROS DE LA BANCA :
  • ISABELLA DE MATOS MENDES DA SILVA
  • ROGERIA COMASTRI DE CASTRO ALMEIDA
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 04-may-2018


  • Resumen Espectáculo
  • Street food comprises an expanding sector in the world, presenting social, cultural, nutritional and economic contributions. However, it is associated with concern about food safety, since it can carry foodborne diseases. Thus, this study aimed to characterize the offer and the safety of street food in Brazil, based on scientific production published between 2000 and 2014. A literature review was carried out, based on 71 publications, including papers, dissertations and thesis. It was observed a predominance of national papers, with greater publication from 2008, being highlighted studies conducted in the Northeast (37.18%) and Southeast (33.33%) regions, and the States of São Paulo and Bahia (21, 79% studies, each one). In this scenario, the streets predominated (76%), followed by beaches (8,45%), typical parties and areas close to universities (5,63%, in each place). Regarding the sales structures, 60.53% of the studies showed the prevalence of carts (39.43%), tents (26.76%) and trailers or vans (11.26%). The main categories of food sold included: sandwiches (43,66%), fruit juice (25,33%), animal origin products and salted with (25.35% each).It was verified that53 (74.64%) studiesevaluated the hygiene practices at the sell points, 40 (56.33%) quality microbiological of food, surfaces or water, one the parasitological and other one the microscopic quality. Seven (9.85%) studies evaluated the pH value and 13 (18.30%) the food temperature. Among the studies that evaluated the hygiene practices, 96.42% reported inadequacies, regarding the adoption of Good Manufacturing Practices. In the studies that evaluated the microbiological quality, 97.5% reported some level of nonconformity and, in most cases, the products were classified as unfit for consumption. These results reinforce the concern with the hygienic quality of commercialized foods, demanding public attention to improve the regulation of the activity, in order to promote the offer condition and the quality of food and to protect the consumers' health.

9
  • KEILA GABRIELI MATOS DOS PRAZERES
  • EXTRACTION AND CHARACTERIZATION OF CAUPI (Vigna unguiculata L.) AND MANGALÔ (Lablab purpureus L.) BEAN STARCHES

  • Líder : RENATO SOUZA CRUZ
  • MIEMBROS DE LA BANCA :
  • RENATO SOUZA CRUZ
  • JOHNSON CLAY PEREIRA SANTOS
  • LUCIANA ALVES DE OLIVEIRA
  • Data: 11-jul-2018


  • Resumen Espectáculo
  • Beans are leguminous, based on human food, because they are rich in carbohydrates, proteins, fibers and other nutrients. It is characterized by a coffee composed mainly of carbohydrate, in this way the starch predominates. Starches and their derivatives are used in virtually all industrial sectors. In the food industry can be used as basic ingredients of products or additives, in the improvement of their products, their presentation or conservation. The amalgics were not performed with the chronic masters and were not prepared for printing. In this work, cowpea and lablab bean starches were used to study the physical-chemical, thermal, image and rheological characteristics and an examination of their applicability in the food industry. The amides were characterized by hydration, lipids, ash, phosphorus content, apparent amylose content, mass properties (RVA), water and oil absorption capacity, image analysis (SEM), FTIR, X-ray diffraction, properties (TG / DTG and DTA). In the centesimal analysis to starches the values according to the norms specific for native starches. The amylose contents were 46.85% and 45.32% for cowpea and lablab bean, respectively. Scanning electron microscopy increased the levels of starches and grains by 11.44 μm for cowpea starch and 17.33 μm for lablab bean starches. The crystallinity pattern has been used by X-ray diffraction for the two type C samples, which is typical of legumes. The water-absorbing starch and the oil in the starches, the lablab bean starch are the values 92 g / 100g-1 and 64g / 100g-1, respectively. In the TG / DTG analysis the starch and lablab beans showed higher thermal stability than the cowpea with temperature spices of 324 ºC and 319 ºC, respectively. The maximum viscosity of mangalô bean starch was higher than that found for cowpea starch, as well as for the mass temperature ranging from 82 ° C to 78.7 ° C. The starch of lablab bean has a greater tendency of retrogradation and greater thermal stability than the starch of cowpea.

10
  • JAMILY ARAUJO SOUZA
  • VALIDATION OF METHODS FOR ASSESSING THE CYTOTOXICITY OF POLYMERIAL MATERIALS USED IN FOOD PACKAGING AND / OR COMPONENTS

  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • EDITH CRISTINA LAIGNIER CAZEDEY
  • RICARDO DAVID COUTO
  • Data: 19-jul-2018


  • Resumen Espectáculo
  • Polymers used in food packaging are originated from plant, animal, chemical and biotechnological sources. And its composition can be equally varied due to the mixing of polymers in different proportions or inclusion of additives for the improvement of physicochemical properties. Considering that the toxicological safety of these materials still requires studies, two in vitro methodologies using Caco-2 human intestinal epithelial cells have recently been implemented to evaluate the cytotoxicity of polymeric food packaging materials, which presented good results when compared to each other. However, the analytical performance of both methods needs to be properly evaluated through the validation of analytical parameters for unequivocal proof of their capacity. In this sense, this work optimized and validated these bioanalytical methods in order to prove its suitability for the citotoxicity evaluation of polymeric materials used in food packaging and / or its components. Direct (DC) and indirect (IC) contact assays were performed in 60 mm Petri dishes containing 1.0x106 cells/mL suspension and the samples after 24 h of incubation had their bioreactivity determined by the evaluation of the effect on the cells. The validation step involved the evaluation of the linear range response, linearity, selectivity, precision and robustness of the methods. The research showed within the range of minimum and maximum sample size tested, the response was linear, with correlation coefficients (r) of 0.98 and 0.99 for direct contact (DC) and indirect contact (IC) methods, respectively. The analysis of selectivity demonstrated that both methods were able to detect the residual presence of cytotoxic substance. For the precision parameters, the relative standard deviation ranged from 2.4% to 6.5% (DC) and 1.8% to 15% (IC), being in compliance with the reference values. For the robustness study, the only parameter that negatively impacted the response was the increase in the volume of agar in the IC method causing a significant decrease in the size of the reactivity halos (P<0.05). In addition to meeting the validation criteria, the methods can be considered as simple analytical tools for screening the cytotoxicity of materials used in food packaging.

11
  • YNAYARA JOANE DE MELO RODRIGUES
  • MINERAL COMPOSITION, CENTESIMAL, PHYSICAL-CHEMICAL PARAMETERS OF GUAJIRU FRUITS (Chrysobalanus icaco L.): RELATIONSHIP WITH ITS SENSORY ASPECTS
  • Líder : JOSE ANTONIO MENEZES FILHO
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • JOSE ANTONIO MENEZES FILHO
  • LUCIANA ALVES DE OLIVEIRA
  • Data: 13-ago-2018


  • Resumen Espectáculo
  • Guajiru is a fruit of the species Chrysobalanus icaco L. found in the restingas of all Brazilian coast, has great food potential and is used by fishing communities in their in natura and/or processed forms, such as sweets, jams and preserves. The sensorial characteristics are related with genetic factors, the way of cultivation of the species and edaphoclimatic conditions, as well as by the existing compounds and degree of maturation of the fruits. In this way, the present work has the objectives of describing the physical-chemical characteristics, nutritional and sensory profile of guajiru fruits (C. icaco) from two regions of Brazil and evaluate their influence on sensorial characteristics. For this purpose, collections were made in the states of Rio Grande do Norte and Bahia, Brazil, here named RN and BA, respectively. The determinations of the weight, height and diameter of each fruit (pulp, fruit, seed), total acidity (pH), total soluble solids content (TSS) in °Brix were performed. Besides the centesimal composition, with determination of total carbohydrates, moisture, ashes, proteins and lipids; the mineral content was determined by atomic absorption spectroscopy (in the flame and in the graphite furnace modes) and sensorial analysis of the in natura fruit acceptance from the two localities. The data were statistically analyzed by Student's t-test to compare the fruits of the two regions with respect to physicochemical and sensorial characteristics, Pearson correlation for micro and macro-nutrients, cluster analysis forsensorial categories. Differences were observed between the fruits of the two regions. In relation to the energy value, which were 60.04 and 73.12 Kcal. 100 g-1 for BA and RN, respectively. They presented pH of 5,03 and TSS of 13,33 °Brix for RN samples and pH 5,44 and TSS of 10,93 °Brix for BA. There was a correlation between micro and macronutrients, except lipids. The abundace of mineral components was in the following order: K> Na > Mg> Ca> Fe> Mn> Cu> Zn> Ni> Cr, ranging from 206 mg/100g (K) to 0.87μg/100g (Cr). Guajiru RN presented higher levels of micro and macronutrients, which interfered in the characteristics, mainly fruit flavor, and consequently led to a better acceptance of these samples in comparison with the BA guajiru. Thus, it is expected that the consumption of guajiru fruits will be stimulated and contribute in a beneficial way to the diet of the native population, moreover improving its commercialization and cultivation, consequently contributing to the propagation of the species and maintenance of the indigenous flora of the restinga.

12
  • CINARA SOARES PEREIRA CAFIEIRO
  • REGIONAL FRUIT BASED LIQUOR: a sensory and physico-chemical study with passion fruit (Passiflora cincinnata Mast.)
  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • CAROLINA OLIVEIRA DE SOUZA
  • LÍGIA REGINA RADOMILLE DE SANTANA
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • Data: 26-sep-2018


  • Resumen Espectáculo
  • The passion fruit of the bush is a fruit with good agronomic characteristics, nutritional, and a regional raw material of low cost that can be used in the elaboration of known products or new products. Liquor is an alcoholic beverage composed of a mixture of water, alcohol, sugar and substances that give it aroma and flavor, extracted from: fruits, flowers, leaves, barks, roots, seeds or industrial essences. The objective of this work is to develop passion fruit liqueurs (Passiflora cincinnata Mast.) And evaluate their chemical, physical and sensorial characteristics. The liquors were elaborated in the Laboratory of Bromatology of the Federal Institute of Education, Science and Technology Baiano (IF Baiano) Campus Guanambi-Bahia. Formulations with different concentrations of pulp and syrup were prepared, totaling five treatments: F1 (26.5% Pulp: 73.5% Syrup-40ºBrix), F2 (39% Pulp: 61% Syrup-40ºBrix), F3 (26, 5% Pulp: 73.5% Syrup-70 ° Brix), F4 (39% Pulp: 61% Syrup- 70 ° Brix), F5 (33.3% Pulp: 66.7% Syrup-55 ° Brix). The physicochemical parameters analyzed were: Alcoholic degree (ºGL), Density, pH, titratable total acidity, total soluble solids (SST), reducing and non-reducing sugar. The instrumental color parameters were L * (Brightness), C * (Chroma) and h * (hue angle).In each sample, after dissolving the sugar in water, the syrup was boiled at 60 ° Brix, cooled and mixed to the alcoholic extract, passed through three filtrations and stored in glass containers, and allowed to stand for 1 month until maturation. The liquors were submitted to an acceptance test and purchase intention applied to 60 untrained judges, consumers of alcoholic beverages, ranging in age from 18 to 50 years. All physico-chemical and physical evaluations were performed in triplicate. The tropical passion fruit liquor presented desirable characteristics for processing, such as acid pH, acidity, soluble solids and total sugar. The treatments F4, F3 and F5 presented good acceptability, probably for having presented balanced value of sweetness, acidity and alcohol content. The results were evaluated in the production of liqueurs, an interesting alternative for increasing family income.

13
  • ITALA SUZANA OLIVEIRA SILVA

  • DEVELOPMENT AND COVERAGE CHARACTERIZATION FOR “AMERICAN PASTA” TYPE CAKE BASED ON BRS SCS BELLUNA VARIETY AND BANANA GREEN FLOUR

  • Líder : SERGIO EDUARDO SOARES
  • MIEMBROS DE LA BANCA :
  • ELIETE DA SILVA BISPO
  • LÍGIA REGINA RADOMILLE DE SANTANA
  • SERGIO EDUARDO SOARES
  • Data: 31-oct-2018


  • Resumen Espectáculo
  • Around the world bananas are one of the most consumed fruits. According to data from 2013 in Brazil, each inhabitant consumes 28.99 kg / year. Green banana flour and biomass are banana derivatives which represent an alternative to avoid fruit wastage and to develop new products with high nutritional value since these ingredients can be incorporated into the preparations without affecting the flavor. Therefore, the objective of this study was to develop and characterize the physical, physicochemical, microbiological and sensorial coverages for "American pasta" type cake based on biomass and green banana flour. The banana used was the BRS SCS Belluna variety, provided by EMBRAPA Cassava and Fruticultura Cruz das Almas-BA. It was determined the ideal maturation point of the fruit, to elaborate the coverings for cake, evaluating the hardness, and the% of soluble carbohydrates and starch. Two formulations were developed, one with neutral taste (CBBN) and another chocolate flavor (CBBC), which were compared with commercial "American pastes" of the same flavors (CBCT - traditional and CBCC - chocolate). The centesimal compositions of the products (protein, lipid, ash, carbohydrate and fiber contents) were determined, calorific value, physical and physicochemical characteristics (resistant starch, pH, titratable acidity, water activity, texture and instrumental color ), as well as microbiological and sensory evaluations. The results indicated that until the 8th day after the harvest the BRS SCS Belluna banana maintains its characteristics of green fruit (stored at 18ºC), and thus, it can be used for the production of the cake cover. In the developed formulations, biomass and green banana flour were the major ingredient totaling 49.38% (CBBN) and 38.5% (CBBC). The CBBN and CBBC coverings presented a healthier nutritional composition, characterized by higher ash content, moisture, fibers, resistant starch and proteins, lower caloric value, greater softness and sharper staining compared to commercial coverages. Microbiological analyzes indicated that the refrigerated storage of the four cake toppings kept them in accordance with current legal microbiological standards for 30 days. Among the biomass-based coverages, the evaluators demonstrated greater sensorial acceptance of the chocolate-based biomass-based coverage. While in relation to the intention to buy could be indecision of the consumers regarding the coverings based on biomass. Therefore, given the nutritional quality and health benefits derived from the composition of the coverages developed, it is valid to invest in this type of product, since there is a public to consume it, represented by those who seek a healthier diet or those who need of a dietary sugar restriction, such as diabetics.

14
  • DANILO MOREIRA VILAS BOAS
  • Microbiological Quality of Consumption Water and Occurrence of Waterborne Diseases in the mesoregions of the State of Bahia

  • Líder : ALAISE GIL GUIMARAES
  • MIEMBROS DE LA BANCA :
  • ALAISE GIL GUIMARAES
  • MARION PEREIRA DA COSTA
  • ROGERIA COMASTRI DE CASTRO ALMEIDA
  • Data: 08-nov-2018


  • Resumen Espectáculo
  • The importance of water for the operation of the most diversified sectors of the society is indisputable. This element is essential for the maintenance of all life forms on the planet and, therefore, its microbiological quality must be ensured, so, it must be free of pathogenic microorganisms that represent the main carriers of diseases and can cause irreparable damage to health of the population. The global water crisis is one of the most serious problems facing humanity today. The most important contaminants of water for human consumption are those of fecal origin and their evaluation correspond to the degree of contamination by bacteria belonging to the group of total coliforms, thermotolerant coliforms and Escherichia coli. Therefore, in Brazil, Decree N° 05/2017 establishes the absence of total coliforms and Escherichia coli for each 100 mL of water, so that this sample can be considered as suitable for use. The aim of the present study was to evaluate the microbiological quality of drinking water by means of a longitudinal study in a four-year period (from January 2014 to December 2017), linking microbiological analysis data water, the occurrence of hospital admissions for gastroenteritis of presumed infectious origin and other infectious intestinal diseases during the period considered. The results of the Microbiological Analysis of Consumption Water, issued by the Food Microbiology Laboratory of the Federal University of Bahia, from January 2014 to December 2017, were compared for the parameters recommended in the Brazilian legislation. The epidemiological data were obtained by the digital platform of the Unified Health System, through online consultation, according to ICD-10 and the other results were analyzed using SPPSS statistical software for Windows version 24, with the chi- square of Pearson and Likelihood Ratio, in addition, to verify the agreement between the tests, the Kappa statistic was used. It was verified that of the 7912 analyzed reports, 1603 (20.26%) were rejected for total coliforms, 501 (6.33%) showed growth for thermotolerant coliforms, while 106 (1.34%) of them were not due to the presence of Escherichia coli. These findings may be directly related to the verified averages of 546, 75 hospitalizations per year, mortality rate and number of deaths per thousand inhabitants of 3, 12 and 17, respectively, with a value spent in hospital services of R $ 286829, 00. Therefore, it is inferred that the system of distribution of drinking water, as well as obtaining it through private sources, in the mesoregions of the State of Bahia, is susceptible to contamination, thus contributing to the numbers of hospitalizations, deaths, mortality rate and costs related to waterborne diseases.

15
  • JOSELENE CONCEIÇÃO NUNES NASCIMENTO

  • MICROBIOLOGICAL QUALITY OF MEALS OF SELF-SERVICE RESTAURANTS IN SALVADOR AND ITS RELATIONSHIP TO FOOD DISEASES IN BAHIA, BRAZIL

  • Líder : ALAISE GIL GUIMARAES
  • MIEMBROS DE LA BANCA :
  • ALAISE GIL GUIMARAES
  • ROGERIA COMASTRI DE CASTRO ALMEIDA
  • RYZIA DE CASSIA VIEIRA CARDOSO
  • Data: 09-nov-2018


  • Resumen Espectáculo
  • In contemporary times, food is characterized by the modern lifestyle, marked by the scarcity of time, making the choices and habits of consumption directed to food more consistent with the new lifestyle of the population. With this advent came the need for food outside the homes, especially in establishments that offer ready-to-eat meals as self-service restaurants. On the other hand, the consumption of meals in these establishments is one of the factors that contribute significantly to the occurrence of Foodborne Diseases, which represent a major public health problem worldwide. The objective of this study was to conduct a retrospective study of the microbiological quality of foods from self-service restaurants in Salvador and metropolitan mesoregion of Salvador and to collect information on the official occurrence of outbreaks of Foodborne Diseases in the state of Bahia, Brazil, in the period from 2013 to 2017. A total of 5,146 analysis reports were evaluated, of which 807 (15.68%) were not in compliance with Brazilian legislation (RDC Nº. 12). Among the non-conforming samples, 784 (94.45%) showed coliforms at 45ºC, 27 (3.26%) presented Bacillus cereus, seven (0.84%) coagulase-positive staphylococci, seven (0.84%) sulfite reducing Clostridia and five (0.61%) Salmonella. During the study period, 65 outbreaks of foodborne diseases were reported in the State of Bahia, Brazil, and recorded in the Sistema de Informação de Agravos de Notificação (Notification Disease Information System, SINAN), and a higher prevalence was observed in the age group between 20 and 49 years. Outbreaks in institutions such as housing and workplaces were the most frequent, as were the etiological agents most involved in the outbreaks were coliforms, Escherichia coli, Staphylococcus coagulase positive, sulphite-reducers Clostridium and Salmonella spp. The main transmission vehicles were mixed preparations and multiple foods. Diarrhea was the most observed symptom, and the main causal factor was inadequate handling/preparation. It was observed in this study that although the notification is still low, the occurrence of foodborne diseases in the State is worrisome, indicating the need for improvement in the Health and Epidemiological Surveillance system.

16
  • RENATA TORRES DOS SANTOS E SANTOS

  • DEVELOPMENT OF AGRO-INDUSTRIAL PRODUCTS USING DIFFERENT UMBRELLA GENOTYPES

  • Líder : ALINE CAMARÃO TELLES BIASOTO
  • MIEMBROS DE LA BANCA :
  • ALINE CAMARÃO TELLES BIASOTO
  • ELIETE DA SILVA BISPO
  • RITA DE CÁSSIA MIRELA RESENDE NASSUR
  • Data: 19-nov-2018


  • Resumen Espectáculo
  • The high Brazilian production of different tropical fruit varieties is the third largest in the world. However, there are still many native and exotic fruits that have not been economically exploited due to their low availability, lack of knowledge about the production and conservation systems, as well as aspects related to fruit quality. In this context, the umbu (Spondias tuberosa Arruda), which is a native fruit of the Brazilian semi-arid region, is considered a vegetal product of extractivism of great economic importance for the strengthening of family agriculture and the regional development of the semi-arid Northeastern population, which harvests fruits and sell them for consumption in natura, or in the form of pulps, jellies, sweets, sorves and drinks. In this scenario, the objective of this study was to evaluate the potential of six umbilical genotypes (Accesses 37, 44, 48, 52, 55, 68) for industrial processing in the form of bulk candy and to analyze the composition of an alcoholic fermented beverage of umbu, made from the pulp of the fruit in natura and its frozen pulp. The sweets were prepared from the formulation consisting of 49% pulp, 1% pectin and 50% sucrose in a stainless steel pan under constant manual stirring at an approximate temperature of 100 ° C until the minimum reach of 75 ° soluble solids Brix. The fermentations were elaborated from the fermentation of the umbu wort chaptalizado with sucrose in the concentration of 180 g L-1, by the action of yeasts Saccharomyces cerevisiae; the wort being composed of the pulp of the umbu diluted in 50% distilled water. The quality of the sweets was determined in relation to the commercial chemical composition (pH, total acidity, water activity, soluble solids, moisture, firmness, color (L *, a *, b *), reducing sugars and non-reducing, vitamin C and syneresis), consumer acceptance test using a nine point hedonic scale, and application of the CATA questionnaire containing 23 terms that included emotions and sensory characteristics related to appearance, texture, taste and aroma. The results of the physical-chemical analyzes and the sensorial test of the sweets were submitted to ANOVA and Tukey's test (p≤0.05), while CATA results were analyzed by correspondence analysis and Cochran's Q test (p≤0, 05). According to the results, the physicochemical composition of the samples presented a significant difference (p≤0.05) in relation to the analyzed variables, except for the soluble solids content of the samples made with the genotypes, which was fixed at 75 ° Brix during while the commercial sample had 72 ° Brix. The sensory acceptance test showed that, in general, all samples were satisfactorily accepted by the consumers, and the sweets
    xv
    elaborated with Accesses 37, 44, 52 and 55 presented a higher preference for consumers, while commercial sweetness, less preference in the Map of Internal Preference. Therefore, the descriptive analysis from the CATA, showed that the terms sweet, cloying and sweet taste were also perceived in the sweets of the different umbu genotypes tested, with no significant difference (p≤0.05), and that the term umbu did not differ significantly (p≤0.05) among all samples of sweets, including commercial ones. The obtained beverages were evaluated for the fermentative kinetics of the process (ethanol yield, ethanol yield and product yield) and their physicochemical composition (pH, density, volatile and total acidity, alcohol content and dry extract, free sulfur dioxide and total, reducing sugars and total, color (L *, a *, b *, C *, h), total phenolic compounds, vitamin C and quantification of phenolic compounds). The results of the fermentative kinetics and the physical-chemical analysis of the fermented were submitted to ANOVA and Student's test (p≤0.05) and showed that there was no significant difference (p≤0.05) between the treatments in the fermentative kinetics, demonstrating which was satisfactory with an average yield of 70%, average productivity of ethanol at 0.50 g L-1 and a product yield of about 0.70. According to the results obtained, the two treatments present a significant difference (p≤0.5) in the physico-chemical composition for most of the analyzed variables, except for the soluble solids content, dry and reduced extract, luminosity and total phenolic compounds. However, both ferments comply with the Brazilian legislation for fermented fruits and are classified as a dry alcoholic beverage because they have a quantity of sugars lower than 3 g / L. In addition, the quality of the beverage showed the existence of a great variety of bioactive compounds present, being identified 22 phenolic compounds, of these, the total flavanols were major in its composition, and the stilbenos, minority. It is worth noting that the evaluated genotypes can be an interesting alternative in the elaboration of candy in mass, aiming to improve the quality and standardization of this product. Therefore, the fermented alcoholic beverage presents as a new investment option in the beverage area for the northeastern semi-arid region.

17
  • LUCIMARA MIRANDA MARTINS

  • POTENTIALITY OF COCOA CULTIVARS FROM SOUTH BAHIA REGION FOR THE PRODUCTION OF FINE CHOCOLATES

  • Líder : ELIETE DA SILVA BISPO
  • MIEMBROS DE LA BANCA :
  • ALINE CAMARÃO TELLES BIASOTO
  • ELIETE DA SILVA BISPO
  • LEONARDO FONSECA MACIEL
  • Data: 22-nov-2018


  • Resumen Espectáculo
  • Cacao is a fruit of great economic importance, mainly for the production of chocolate. Chocolate is appreciated worldwide because of its sensory characteristics and chocolate with high cocoa content may have health benefits because it is rich in flavonoids and phenolic compounds that help prevent disease. The sensory characteristics of chocolate are influenced by the variety of cocoa, the steps of processing and the processing of the product that it are important for the development of the typical aroma, taste and color of chocolate, as well as ensuring its nutritional composition. Cacao is presented in three groups: Trinitarian, Criollo and Forastero. The international market classify the cacao as bulk, fine cocoa and special (or organic) cocoa. Cocoa bulk, or common cacao, is a type of standard cocoa that does not have specific aromatic characteristics. Fine cacao has special aromas. Brazil is the seventh largest producer of cocoa, however, it is not considered as a producer of fine cocoa. In order to change the image of Brazilian cocoa in the international market, the Executive Committee of the Cacao Plan (CEPLAC) has developed projects to demonstrate that Brazilian cacao has characteristics of fine cocoa, being different from the fine cocoa produced in other countries, in relation to the environmental, technological and organoleptic factor. In this context, there is an imminent need to disseminate the results of the studies with the cultivars produced in South of Bahia, in order to intensify the potential of Brazilian cacao for the production of fine chocolate. The objective of this work was to determine the sensory profile and acceptance of chocolates produced from the cultivars ParáParazinho, Ipiranga, CCN51 and PS1319, as well as the chemical composition (monomeric phenolics, total phenolics, anthocyanins and methylxanthines), antioxidant capacity and the characteristics of color and texture. The results of the chemical and physical determinations were evaluated using the nonparametric statistical method and the difference between the means was determined using the Kruskal-Wallis test (p <0.05). The results of the sensorial analyzes were submitted to ANOVA and the Tukey test was applied (p <0.05). Sensory and chemical data were correlated by Partial Least Squares (PLS). The chocolate samples differed significantly from each other as regards the content of theobromine, gallic acid, catechin and caffeine (mg / g). Regarding the physical analyzes, the samples showed a significant difference in the parameters hardness, chewing and luminosity. Quantitative Descriptive Analysis (ADQ) determined the sensorial profile of the chocolate samples and revealed for the Pará / Parazinho variety characteristics such as acid aroma, cocoa aroma, roasted aroma, bitter taste, astringency and more intense cocoa flavor; the Ipiranga variety was characterized by fruity aroma, fruity flavor and more pronounced melting; the CCN51 variety showed sweet aroma, buttery aroma, sweet taste, buttery flavor, brown color and more intense firmness; and the PS1319 variety showed acid scent, cocoa flavor, bitter taste and intense acid taste. In the consumer tests, samples from the Ipiranga and CCN51 varieties (did not differ significantly from each other) received the highest scores for the overall quality attribute, as well as a higher percentage of positive purchase intent (88%). The chocolates of the Pará / Parazinho and PS1319 varieties received the lowest acceptance ratings by consumers, which may be justified by the greater bitterness revealed in the Just Right Scale test. The CATA test revealed similar sensory descriptors to those found in ADQ® for the samples of the four cultivars studied, explaining 86.63% of the variability among the samples. The cacao varieties CCN51 and Ipiranga presented special characteristics of aroma and flavor and, therefore, potential for the production of fine chocolates.

18
  • IVO HENRIQUE PINTO ANDRADE
  • NUMBER OF FRUIT STARCH (Artocarpus altilis (PARKINSON) FOSBERG) PRODUCED BY ULTRASSONIC TREATMENT
  • Líder : RENATO SOUZA CRUZ
  • MIEMBROS DE LA BANCA :
  • CÍNTIA MARIA ARIANI FONTES
  • GIOVANI BRANDÃO MAFRA DE CARVALHO
  • RENATO SOUZA CRUZ
  • Data: 26-nov-2018


  • Resumen Espectáculo
  • The use of starch in nanotechnology provides the obtainment of nanoparticles with high absorption capacity, low diffusion limitation, as well as non-toxic and biodegradable nature, reducing or eliminating the possibility of environmental impacts. The main starches used in nanotechnology are conventional sources such as corn, cassava and potato. However, because its high content of starch in its composition, and studies with this botanical source for the production of starch nanoparticles (SNP) have not been found, breadfruit also presents as an amylaceous source that can be used in production of nanostructures, and this possibility is also a way to promote the cultivation of the fruit. Among the methods of production of SNP is the ultrasonication, which provides the obtaining of nanostructures in a simple way, without the need of chemical agents and in short time, presenting as an alternative method when compared to traditional acid hydrolysis. The objective of this work was the production of starch nanoparticles using breadfruit (Artocarpus altilis (Parkinson) Fosberg) as an amylaceous source, through ultrasonication. After 75 minutes of ultrasonic treatment in 0.5% starch suspensions, the breadfruit SNP produced had polymodal distribution in relation to their size, with bands of 8.72-37.80 nm, 43.80-164.00 nm and between 190.00-955.00 nm. The overall mean SNP size was 145.65 ± 50.56 nm. The polydispersity index was 0.46 ± 0.06, indicating a slightly homogeneous size distribution. The zeta potential of the SNP was -16.93 ± 0.50 mV, which means tendency to agglomeration. The SNP had rounded and rod-shaped formations, with some observed clusters. In 25 minutes of processing, the suspensions of SNP already presented with high transparency and visible light scattering characteristic of colloidal particles (Tyndall effect) in nanoscale. The viscosity of suspended nanoparticles was lower when compared to native starch. The nanoparticles were less thermally stable. The C-O groupings were the most weakened and possibly ruptured by ultrasonic treatment. It was observed by the X-ray diffraction patterns that the ultrasonic waves caused a collapse in the crystalline region of the starch, leading to the obtaining of predominantly amorphous nanoparticles. The breadfruit SNP produced by ultrasound can be potentially applied as fat substitute and paper coating, as well as functions as emulsifiers or with functional appeal in foods, if they are chemically modified upon their production.

19
  • RITA DE CÁSSIA DE SOUZA
  • PHYSICAL AND CHEMICAL EVALUATION OF GRAPE SEED OIL EXTRACTED BY DIFFERENT METHODS: INFLUENCE OF PRE-TREATMENT WITH ULTRASOUND

  • Líder : MARCELO ANDRES UMSZA GUEZ
  • MIEMBROS DE LA BANCA :
  • JOSIANE DANTAS VIANA BARBOSA
  • MARCELO ANDRES UMSZA GUEZ
  • SERGIO EDUARDO SOARES
  • Data: 29-nov-2018


  • Resumen Espectáculo
  • The grapes processing industry is responsible for the generation of 12 million tonnes / year of waste, of which approximately 3 million corresponds to seeds, that can cause serious environmental problems when not properly discarded. In Brazil, most of the grape bagasse generated in its processing is treated as waste with low value or discarded inadequately. However, re-using waste from the grape processing industry, particularly grape seeds, is a great interest because from it is possible to extract the oil rich in polyunsaturated fatty acids, phenolic compounds and natural antioxidants such as vitamin E. The aim of this work was to study the effect of pre-treatment by ultrasound in grape seed and to evaluate  not only the yield, but also the chemical and physical characteristics of the obtained oil. The effects of temperature and time of ultrassound on the seeds were evaluated by Soxhlet (Sox) and Bligh Dyer (BD) extractions.  The Supercritical Fluid Extraction (SFE) was performed according to the parameter obtained by Sox and BD extractions, and the oils obtained by the different methodologies were compared. Ultrasound pretreatment was highly effective in the oil extraction, not only increasing significantly oil yield (32.1; 20.31; 12.54%), but also total phenolic content for the oils (311; 234; 184%) to the oils obtained by Sox, BD and SFE, respectively. The fatty acids composition by SFE showed higher proportions of unsaturated fatty acids. The gravimetric analysis indicated that the obtained oil, for all extraction methods evaluated, presents high thermal stability, suffering degradation at temperatures above 370 ° C.  Vitamin E (expressed as α-tocopherol) was separated and analyzed by High Performance Liquid Chromatography (HPLC)  with UV detector. The pre-treatment with ultrasound  has positively influenced the samples obtained by EFS and BD contributing with an increase of approximately 56 and 99%, respectively, in the α-tocopherol content in comparison with the sample without treatment (WT). This positive effect was not observed in Sox extraction. The SFE method was the most effective in the extraction of α-tocopherol, being 3.6 and 5.7 times (SFE: WT), and 11, 2 and 14.2 times (SFE: 30-30) higher in comparison to extractions by Sox and BD without treatment and treatment, respectively. The results presented in this work indicate that the pre-treatment by ultrasound can be a viable means to improve the efficiency of the extraction of oil, obtaining of phenolic compounds and Vitamin E from the grape seed, valid for the three methods studied, it is EFS that, in addition to efficiency, does not require organic solvents.

20
  • LARISSA FARIAS DA SILVA CRUZ
  • EFFECT OF STORAGE TEMPERATURE ON PARAMENTS -CHEMICAL, MICROBIOLOGICAL 
    AND BIOACTIVE HONEY COMPOUNDS DE Melipona scutellaris
  • Líder : JANICE IZABEL DRUZIAN
  • MIEMBROS DE LA BANCA :
  • JANICE IZABEL DRUZIAN
  • KARINA TEIXEIRA MAGALHAES GUEDES
  • LEONARDO FONSECA MACIEL
  • Data: 30-nov-2018


  • Resumen Espectáculo
  • The honey of stingless bees (Melipona scutellaris) is distinguished by its nutritional, therapeutic and sensorial properties different when compared to honey of the Apis bee. The commercialization of this honey faces some obstacles, mainly in the stability during the storage, since its peculiar composition presents greater humidity, being the product more susceptible to changes. Although there is a Technical Regulation on the Identity and Quality of Melipona honey applied throughout the state of Bahia, there is no current national legislation for this type of honey, thus compromising product quality and consumer safety. In this context, the objective of this study was to monitor the physico-chemical, microbiological and bioactive composition of stingless honey (Melipona scutellaris) submitted to room temperature and refrigeration during storage, as well as to obtain scientific data that may aid in the establishment of identity standards and product quality. Samples collected in Salvador-Bahia were stored in polyethylene packages at 30ºC (ambient temperature) and 5ºC (refrigeration) for 150 days. During this period were monitored: total pH, total acidity, water activity, hydroxymethylfurfural, diastase activity, ash, color, free sugars (HPLC-RI), total phenolic compounds, total flavonoids, antioxidant activity (DPPH, FRAP and ABTS- ), and microbiological quality. The results showed that the honey quality was changed at both temperatures depending on storage time. The most pronounced changes occurred in increases of the total acidity and HMF, and in decreases in diastase activity and bioactive compounds. Depending on the storage time and temperature, the first three parameters did not comply with those established by Ordinance No. 207 (ADAB, 2014) for Melipone honey, with the highest incomformities detected at 30 ºC. Storage at 5 ° C for up to 60 days resulted in minor changes in physical and chemical properties, color, microbiological counts, bioactive compounds and antioxidant activity. However, from 60 days, the storage at 30ºC resulted in lower degradation of bioactive compounds associated with higher antioxidant activity. From the 60 days / 5 ºC the process of crystallization of the dextrose began, and the water content remained higher, favoring the degradation of the bioactive compounds and the reduction of the antioxidant activity. Crystallization also seems to favor the reaction of HMF formation and browning of honey. No contamination was detected by total coliforms, thermotolerant and Salmonella sp. The molds and yeasts were detected in reduced amounts in the honeys stored at room temperature, but lower than the parameters established (n o . 207 - ADAB, 2014). Even with degradation, the honey stored for 150 days at both temperatures still shows quality and functional properties, however, the parameters temperature and storage time associated with crystallization are methods of controlling the degradation of bioactive compounds, antioxidant activity, formation of HMF and color change of Melipona scutellaris honey. 

21
  • LUDMILA SUZARTE MARQUES DOS SANTOS
  • CARACTERIZAÇÃO FÍSICO-QUÍMICA DE RESÍDUO DO PROCESSAMENTO DA AMÊNDOA DE CACAU (Theobroma cacao L.)

  • Líder : EDERLAN DE SOUZA FERREIRA
  • MIEMBROS DE LA BANCA :
  • EDERLAN DE SOUZA FERREIRA
  • SERGIO EDUARDO SOARES
  • HENRIQUE RODRIGUES MARCELINO
  • Data: 30-nov-2018


  • Resumen Espectáculo
  • Cocoa is derived from the tropical tree Theobroma cacao L. (Malvaceae family). It presents high world production as well as great market value. Due to the processing stages of the cocoa beans, several by-products are commonly discarded, however, new research has been focusing on alternatives for the use. From this, the objective of this study was to characterize the powder residue from the processing (roasting and peeling) of cocoa beans. The analyses performed were thermal, physical-chemical, colorimetric, profile of volatile compounds, centesimal composition, quantification of individual minerals, composition of amino acids, profile of fatty acids, assay of total phenolic and flavonoid and antioxidant activity (DPPH, FRAP and ABTS) and determination of major phenolic and methylxanthin. The residue showed a content of 14.3% of total protein with amounts of amino acids higher than the recommendations and 29% of total lipids with a content of saturated fatty acids (61%) and unsaturated fatty acids (38%). High contents of individual minerals and significant results were verified in the DPPH radical (2.2-diphenyl-1-picrylhidrazil) elimination test (34.50 μM trolox/g), as well as in the other analyses of antioxidant activity and thermal stability. In view of the data obtained, the residue from cocoa bean processing presents nutritional and functional characteristics, besides other favorable parameters for use in the food industry.

22
  • LEILA MAGDA RODRIGUES ALMEIDA
  • Incorporation of Spirulina Sp. Biomass for the Development and Characterization of Functional Food
  • Líder : CAROLINA OLIVEIRA DE SOUZA
  • MIEMBROS DE LA BANCA :
  • CARLOS PASQUALIN CAVALHEIRO
  • CAROLINA OLIVEIRA DE SOUZA
  • DENILSON DE JESUS ASSIS
  • Data: 13-dic-2018


  • Resumen Espectáculo
  • Innovative research involving biotechnology through the use of microorganisms for the production of new products, including food, has been prominent in the global food industry. Spirulina platensis LEB-18 is a microalgae with nutritional composition suitable for use as a food supplement, highlighting its high protein content, mono and polyunsaturated fatty acids, bioactive compounds, vitamins and minerals, characterizing it in the context of functional foods . The prospective study demonstrated that the main foods developed with application of microalgae are instant foods and functional foods. Therefore, the market needs for practical and healthy products motivated the elaboration of the present work, whose objective was to develop a functional sauce enriched with the biomass of Spirulina platensis, as well as to evaluate its physical-chemical, microbiological, sensorial and antioxidant characteristics. For the development of the sauces, according to the dietary techniques, four formulations were prepared: control (without Spirulina biomass) and sauces containing different concentrations of Spirulina biomass (2.0%, 3.0% and 4.0% ). Among those formulations, the one that obtained the best results in the physical-chemical parameters (pH and acidity), texture and sensory was selected for the monitoring and evaluation during 45 days of storage (refrigeration 4-6ºC). For the selected formulation, the parameters: pH, acidity, water activity, total protein, total lipids, carbohydrates, crude fiber, total ashes, minerals, fatty acid profile, antioxidant potential, color and analysis were evaluated during the storage period. microbiological study. The use of Spirulina in the sauces increased the pH value and altered the overall texture profile, giving stronger sauces with increasing concentrations. The highest value of firmness (0.45 N) was attributed to the sauce containing 4.0% of biomass, as well as the highest notes in the sensory evaluation (aroma, flavor, textute, overall impression, purchase intention). Thus, this formulation was selected for analysis during storage. The incorporation of the soybean meal with 4.0% of biomass obtained high levels of total proteins (7.94%), fibers (1.05%), minerals (884.43 mg / 100g), phenolic compounds (350.30 mgEAG.g (C18: 3n3 - 6.40% and C18: 1n9 - 20.11%), which presented a high antioxidant potential (IC50 12,20 mg.ml-1). were not found in the control. Regarding color, the formulation presented a significant dark green coloration, which is justified by the presence of pigments, including chlorophyll and phycocioanine, responsible for the blue-green coloration of this microalga. The microbiological analysis showed for both sauces the absence of Salmonella sp., And absence of Coliforms (≤ 3.0 MPa / g of product) and Coagulase positive Staphyloccoccus (≤ 102 CFU / g of product), being in agreement with current legislation . After 45 days of storage, the physicochemical characteristics, antioxidant activity and color parameters were maintained, indicating that the storage conditions (refrigeration 4 - 6ºC) were appropriate for preservation of the natural product and free of preservatives. The results of the research allowed to conclude that the enriched sauce with 4.0% of Spirulina biomass is a safe food, sensorially accepted and presents possible health benefits, presenting characteristics of a functional food. However, there is a need for further studies in the development of new food products with addition of Spirulina, as it is legally authorized as food and represents an alternative source with potential commercial, nutritional and technological value.

23
  • DARCILENE FIUZA DA SILVA

  • INFLUENCE OF DIFFERENT DRIVING AND DRAINAGE SYSTEMS ON THE NUTRITIONAL AND SENSORIAL QUALITY OF 'BRS MAGNA' JUICE JUICE IN THE SÃO FRANCISCO VALLEY

  • Líder : MARIA EUGENIA DE OLIVEIRA MAMEDE
  • MIEMBROS DE LA BANCA :
  • MARCELO ANDRES UMSZA GUEZ
  • MARIA EUGENIA DE OLIVEIRA MAMEDE
  • PATRÍCIA COELHO DE SOUZA LEÃO
  • Data: 18-dic-2018


  • Resumen Espectáculo
  • Functional foods play an important role in promoting and preventing health. The grape, one of them acts in the immune system, has antioxidant action and has anti-inflammatory power. The objective of the present work was to evaluate the quality of grape juice made with the 'BRS Magna' cultivar in three systems of conduction (Latada, Lira and Espaldeira) and grafted on two rootstocks (IAC 572 and IAC 766). The experiment was conducted in the experimental area of Bebedouro and Embrapa Semiarid Laboratory of Enology from November 2017 to October 2018. Physicochemical characteristics, as well as antioxidant activity, phenolic compounds, profile and sensorial characteristics were determined. described through the Quantitative Descriptive Analysis (ADQ®), the CATA - Check-All-That-Apply and acceptance test. Statistical analysis was performed by ANOVA, Tukey test, Correspondence Analysis (AC), Internal Preference Map (MDPREF), Principal Component Analysis (PCA), Partial Least Squares Regression (PLS) and Extended Preference Internal Map ). The results indicated that the juice quality was influenced by both the conduction system and the rootstock tested. In relation to the physical-chemical parameters analyzed, the lira and trellis systems grafted by IAC 766, respectively, presented the highest balance between acidity, soluble solids and pH. The color parameters of the T3S1 sample resulted in higher values, corresponding to the higher color intensity among the other treatments. The content of IPT and monomeric anthocyanins was higher in the T1S2 sample than in the total phenolics was in the T3S2 treatment, being able to observe the influence of the rootstock in the determination of this analysis. In relation to the antioxidant activity for DPPH analysis the sample with the highest potential was T2S2 and for ABTS to T1S2, also observing the influence of the rootstock IAC 766. The content of phenolic compounds was higher in the sample T1S2 followed by T2S1, indicating the nutritional and functional power of these treatments. The tasters indicated that samples T1S1 and T2S1 were similar, showing better sensory characteristics, followed by T1S2. Regarding the overall acceptance, although there was no significant difference, the sample that obtained the highest mean was T2S1. Therefore, in this study, it was possible to prove that BRS Magna grape juice submitted to the conduction system grafted and grafted by IAC 766 (T1S2) is the sample with the highest content of bioactive compounds and nutritional quality having a good market perspective.

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